220101980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{179}}^1\times {\mathrm{8783}}^1$

素因数の和:8978

約数の個数: 48

約数和(自身を含む): 531256320

約数和(自身を除く): 311154340

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 179, 358, 716, 895, 1253, 1790, 2506, 3580, 5012, 6265, 8783, 12530, 17566, 25060, 35132, 43915, 61481, 87830, 122962, 175660, 245924, 307405, 614810, 1229620, 1572157, 3144314, 6288628, 7860785, 11005099, 15721570, 22010198, 31443140, 44020396, 55025495, 110050990, 220101980]

約数ペア:

[(1, 220101980), (2, 110050990), (4, 55025495), (5, 44020396), (7, 31443140), (10, 22010198), (14, 15721570), (20, 11005099), (28, 7860785), (35, 6288628), (70, 3144314), (140, 1572157), (179, 1229620), (358, 614810), (716, 307405), (895, 245924), (1253, 175660), (1790, 122962), (2506, 87830), (3580, 61481), (5012, 43915), (6265, 35132), (8783, 25060), (12530, 17566)]