31381380

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{313}}^1\times {\mathrm{557}}^1$

素因数の和:885

約数の個数: 72

約数和(自身を含む): 95665752

約数和(自身を除く): 64284372

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 313, 557, 626, 939, 1114, 1252, 1565, 1671, 1878, 2228, 2785, 2817, 3130, 3342, 3756, 4695, 5013, 5570, 5634, 6260, 6684, 8355, 9390, 10026, 11140, 11268, 14085, 16710, 18780, 20052, 25065, 28170, 33420, 50130, 56340, 100260, 174341, 348682, 523023, 697364, 871705, 1046046, 1569069, 1743410, 2092092, 2615115, 3138138, 3486820, 5230230, 6276276, 7845345, 10460460, 15690690, 31381380]

約数ペア:

[(1, 31381380), (2, 15690690), (3, 10460460), (4, 7845345), (5, 6276276), (6, 5230230), (9, 3486820), (10, 3138138), (12, 2615115), (15, 2092092), (18, 1743410), (20, 1569069), (30, 1046046), (36, 871705), (45, 697364), (60, 523023), (90, 348682), (180, 174341), (313, 100260), (557, 56340), (626, 50130), (939, 33420), (1114, 28170), (1252, 25065), (1565, 20052), (1671, 18780), (1878, 16710), (2228, 14085), (2785, 11268), (2817, 11140), (3130, 10026), (3342, 9390), (3756, 8355), (4695, 6684), (5013, 6260), (5570, 5634)]