640925100

素因数分解:

$2^2\times 3^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{1013}}^1$

素因数の和:1089

約数の個数: 216

約数和(自身を含む): 2173975440

約数和(自身を除く): 1533050340

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 25, 30, 36, 37, 38, 45, 50, 57, 60, 74, 75, 76, 90, 95, 100, 111, 114, 148, 150, 171, 180, 185, 190, 222, 225, 228, 285, 300, 333, 342, 370, 380, 444, 450, 475, 555, 570, 666, 684, 703, 740, 855, 900, 925, 950, 1013, 1110, 1140, 1332, 1406, 1425, 1665, 1710, 1850, 1900, 2026, 2109, 2220, 2775, 2812, 2850, 3039, 3330, 3420, 3515, 3700, 4052, 4218, 4275, 5065, 5550, 5700, 6078, 6327, 6660, 7030, 8325, 8436, 8550, 9117, 10130, 10545, 11100, 12156, 12654, 14060, 15195, 16650, 17100, 17575, 18234, 19247, 20260, 21090, 25308, 25325, 30390, 31635, 33300, 35150, 36468, 37481, 38494, 42180, 45585, 50650, 52725, 57741, 60780, 63270, 70300, 74962, 75975, 76988, 91170, 96235, 101300, 105450, 112443, 115482, 126540, 149924, 151950, 158175, 173223, 182340, 187405, 192470, 210900, 224886, 227925, 230964, 288705, 303900, 316350, 337329, 346446, 374810, 384940, 449772, 455850, 481175, 562215, 577410, 632700, 674658, 692892, 712139, 749620, 866115, 911700, 937025, 962350, 1124430, 1154820, 1349316, 1424278, 1443525, 1686645, 1732230, 1874050, 1924700, 2136417, 2248860, 2811075, 2848556, 2887050, 3373290, 3464460, 3560695, 3748100, 4272834, 4330575, 5622150, 5774100, 6409251, 6746580, 7121390, 8433225, 8545668, 8661150, 10682085, 11244300, 12818502, 14242780, 16866450, 17322300, 17803475, 21364170, 25637004, 32046255, 33732900, 35606950, 42728340, 53410425, 64092510, 71213900, 106820850, 128185020, 160231275, 213641700, 320462550, 640925100]

約数ペア:

[(1, 640925100), (2, 320462550), (3, 213641700), (4, 160231275), (5, 128185020), (6, 106820850), (9, 71213900), (10, 64092510), (12, 53410425), (15, 42728340), (18, 35606950), (19, 33732900), (20, 32046255), (25, 25637004), (30, 21364170), (36, 17803475), (37, 17322300), (38, 16866450), (45, 14242780), (50, 12818502), (57, 11244300), (60, 10682085), (74, 8661150), (75, 8545668), (76, 8433225), (90, 7121390), (95, 6746580), (100, 6409251), (111, 5774100), (114, 5622150), (148, 4330575), (150, 4272834), (171, 3748100), (180, 3560695), (185, 3464460), (190, 3373290), (222, 2887050), (225, 2848556), (228, 2811075), (285, 2248860), (300, 2136417), (333, 1924700), (342, 1874050), (370, 1732230), (380, 1686645), (444, 1443525), (450, 1424278), (475, 1349316), (555, 1154820), (570, 1124430), (666, 962350), (684, 937025), (703, 911700), (740, 866115), (855, 749620), (900, 712139), (925, 692892), (950, 674658), (1013, 632700), (1110, 577410), (1140, 562215), (1332, 481175), (1406, 455850), (1425, 449772), (1665, 384940), (1710, 374810), (1850, 346446), (1900, 337329), (2026, 316350), (2109, 303900), (2220, 288705), (2775, 230964), (2812, 227925), (2850, 224886), (3039, 210900), (3330, 192470), (3420, 187405), (3515, 182340), (3700, 173223), (4052, 158175), (4218, 151950), (4275, 149924), (5065, 126540), (5550, 115482), (5700, 112443), (6078, 105450), (6327, 101300), (6660, 96235), (7030, 91170), (8325, 76988), (8436, 75975), (8550, 74962), (9117, 70300), (10130, 63270), (10545, 60780), (11100, 57741), (12156, 52725), (12654, 50650), (14060, 45585), (15195, 42180), (16650, 38494), (17100, 37481), (17575, 36468), (18234, 35150), (19247, 33300), (20260, 31635), (21090, 30390), (25308, 25325)]