9880020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{419}}^1$

素因数の和:565

約数の個数: 72

約数和(自身を含む): 30270240

約数和(自身を除く): 20390220

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 131, 180, 262, 393, 419, 524, 655, 786, 838, 1179, 1257, 1310, 1572, 1676, 1965, 2095, 2358, 2514, 2620, 3771, 3930, 4190, 4716, 5028, 5895, 6285, 7542, 7860, 8380, 11790, 12570, 15084, 18855, 23580, 25140, 37710, 54889, 75420, 109778, 164667, 219556, 274445, 329334, 494001, 548890, 658668, 823335, 988002, 1097780, 1646670, 1976004, 2470005, 3293340, 4940010, 9880020]

約数ペア:

[(1, 9880020), (2, 4940010), (3, 3293340), (4, 2470005), (5, 1976004), (6, 1646670), (9, 1097780), (10, 988002), (12, 823335), (15, 658668), (18, 548890), (20, 494001), (30, 329334), (36, 274445), (45, 219556), (60, 164667), (90, 109778), (131, 75420), (180, 54889), (262, 37710), (393, 25140), (419, 23580), (524, 18855), (655, 15084), (786, 12570), (838, 11790), (1179, 8380), (1257, 7860), (1310, 7542), (1572, 6285), (1676, 5895), (1965, 5028), (2095, 4716), (2358, 4190), (2514, 3930), (2620, 3771)]