20123880

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{23957}}^1$

素因数の和:23978

約数の個数: 64

約数和(自身を含む): 68999040

約数和(自身を除く): 48875160

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 23957, 47914, 71871, 95828, 119785, 143742, 167699, 191656, 239570, 287484, 335398, 359355, 479140, 503097, 574968, 670796, 718710, 838495, 958280, 1006194, 1341592, 1437420, 1676990, 2012388, 2515485, 2874840, 3353980, 4024776, 5030970, 6707960, 10061940, 20123880]

約数ペア:

[(1, 20123880), (2, 10061940), (3, 6707960), (4, 5030970), (5, 4024776), (6, 3353980), (7, 2874840), (8, 2515485), (10, 2012388), (12, 1676990), (14, 1437420), (15, 1341592), (20, 1006194), (21, 958280), (24, 838495), (28, 718710), (30, 670796), (35, 574968), (40, 503097), (42, 479140), (56, 359355), (60, 335398), (70, 287484), (84, 239570), (105, 191656), (120, 167699), (140, 143742), (168, 119785), (210, 95828), (280, 71871), (420, 47914), (840, 23957)]