257968980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{557}}^1$

素因数の和:686

約数の個数: 144

約数和(自身を含む): 818947584

約数和(自身を除く): 560978604

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 31, 36, 45, 60, 62, 83, 90, 93, 124, 155, 166, 180, 186, 249, 279, 310, 332, 372, 415, 465, 498, 557, 558, 620, 747, 830, 930, 996, 1114, 1116, 1245, 1395, 1494, 1660, 1671, 1860, 2228, 2490, 2573, 2785, 2790, 2988, 3342, 3735, 4980, 5013, 5146, 5570, 5580, 6684, 7470, 7719, 8355, 10026, 10292, 11140, 12865, 14940, 15438, 16710, 17267, 20052, 23157, 25065, 25730, 30876, 33420, 34534, 38595, 46231, 46314, 50130, 51460, 51801, 69068, 77190, 86335, 92462, 92628, 100260, 103602, 115785, 138693, 154380, 155403, 172670, 184924, 207204, 231155, 231570, 259005, 277386, 310806, 345340, 416079, 462310, 463140, 518010, 554772, 621612, 693465, 777015, 832158, 924620, 1036020, 1386930, 1433161, 1554030, 1664316, 2080395, 2773860, 2866322, 3108060, 4160790, 4299483, 5732644, 7165805, 8321580, 8598966, 12898449, 14331610, 17197932, 21497415, 25796898, 28663220, 42994830, 51593796, 64492245, 85989660, 128984490, 257968980]

約数ペア:

[(1, 257968980), (2, 128984490), (3, 85989660), (4, 64492245), (5, 51593796), (6, 42994830), (9, 28663220), (10, 25796898), (12, 21497415), (15, 17197932), (18, 14331610), (20, 12898449), (30, 8598966), (31, 8321580), (36, 7165805), (45, 5732644), (60, 4299483), (62, 4160790), (83, 3108060), (90, 2866322), (93, 2773860), (124, 2080395), (155, 1664316), (166, 1554030), (180, 1433161), (186, 1386930), (249, 1036020), (279, 924620), (310, 832158), (332, 777015), (372, 693465), (415, 621612), (465, 554772), (498, 518010), (557, 463140), (558, 462310), (620, 416079), (747, 345340), (830, 310806), (930, 277386), (996, 259005), (1114, 231570), (1116, 231155), (1245, 207204), (1395, 184924), (1494, 172670), (1660, 155403), (1671, 154380), (1860, 138693), (2228, 115785), (2490, 103602), (2573, 100260), (2785, 92628), (2790, 92462), (2988, 86335), (3342, 77190), (3735, 69068), (4980, 51801), (5013, 51460), (5146, 50130), (5570, 46314), (5580, 46231), (6684, 38595), (7470, 34534), (7719, 33420), (8355, 30876), (10026, 25730), (10292, 25065), (11140, 23157), (12865, 20052), (14940, 17267), (15438, 16710)]