72781020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1637}}^1$

素因数の和:1684

約数の個数: 144

約数和(自身を含む): 250417440

約数和(自身を除く): 177636420

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 19, 20, 26, 30, 36, 38, 39, 45, 52, 57, 60, 65, 76, 78, 90, 95, 114, 117, 130, 156, 171, 180, 190, 195, 228, 234, 247, 260, 285, 342, 380, 390, 468, 494, 570, 585, 684, 741, 780, 855, 988, 1140, 1170, 1235, 1482, 1637, 1710, 2223, 2340, 2470, 2964, 3274, 3420, 3705, 4446, 4911, 4940, 6548, 7410, 8185, 8892, 9822, 11115, 14733, 14820, 16370, 19644, 21281, 22230, 24555, 29466, 31103, 32740, 42562, 44460, 49110, 58932, 62206, 63843, 73665, 85124, 93309, 98220, 106405, 124412, 127686, 147330, 155515, 186618, 191529, 212810, 255372, 279927, 294660, 311030, 319215, 373236, 383058, 404339, 425620, 466545, 559854, 622060, 638430, 766116, 808678, 933090, 957645, 1119708, 1213017, 1276860, 1399635, 1617356, 1866180, 1915290, 2021695, 2426034, 2799270, 3639051, 3830580, 4043390, 4852068, 5598540, 6065085, 7278102, 8086780, 12130170, 14556204, 18195255, 24260340, 36390510, 72781020]

約数ペア:

[(1, 72781020), (2, 36390510), (3, 24260340), (4, 18195255), (5, 14556204), (6, 12130170), (9, 8086780), (10, 7278102), (12, 6065085), (13, 5598540), (15, 4852068), (18, 4043390), (19, 3830580), (20, 3639051), (26, 2799270), (30, 2426034), (36, 2021695), (38, 1915290), (39, 1866180), (45, 1617356), (52, 1399635), (57, 1276860), (60, 1213017), (65, 1119708), (76, 957645), (78, 933090), (90, 808678), (95, 766116), (114, 638430), (117, 622060), (130, 559854), (156, 466545), (171, 425620), (180, 404339), (190, 383058), (195, 373236), (228, 319215), (234, 311030), (247, 294660), (260, 279927), (285, 255372), (342, 212810), (380, 191529), (390, 186618), (468, 155515), (494, 147330), (570, 127686), (585, 124412), (684, 106405), (741, 98220), (780, 93309), (855, 85124), (988, 73665), (1140, 63843), (1170, 62206), (1235, 58932), (1482, 49110), (1637, 44460), (1710, 42562), (2223, 32740), (2340, 31103), (2470, 29466), (2964, 24555), (3274, 22230), (3420, 21281), (3705, 19644), (4446, 16370), (4911, 14820), (4940, 14733), (6548, 11115), (7410, 9822), (8185, 8892)]