20280218

素因数分解:

$2^1\times 7^3\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1$

素因数の和:124

約数の個数: 64

約数和(自身を含む): 39398400

約数和(自身を除く): 19118182

約数列:

[1, 2, 7, 14, 17, 34, 37, 47, 49, 74, 94, 98, 119, 238, 259, 329, 343, 518, 629, 658, 686, 799, 833, 1258, 1598, 1666, 1739, 1813, 2303, 3478, 3626, 4403, 4606, 5593, 5831, 8806, 11186, 11662, 12173, 12691, 16121, 24346, 25382, 29563, 30821, 32242, 39151, 59126, 61642, 78302, 85211, 170422, 206941, 215747, 274057, 413882, 431494, 548114, 596477, 1192954, 1448587, 2897174, 10140109, 20280218]

約数ペア:

[(1, 20280218), (2, 10140109), (7, 2897174), (14, 1448587), (17, 1192954), (34, 596477), (37, 548114), (47, 431494), (49, 413882), (74, 274057), (94, 215747), (98, 206941), (119, 170422), (238, 85211), (259, 78302), (329, 61642), (343, 59126), (518, 39151), (629, 32242), (658, 30821), (686, 29563), (799, 25382), (833, 24346), (1258, 16121), (1598, 12691), (1666, 12173), (1739, 11662), (1813, 11186), (2303, 8806), (3478, 5831), (3626, 5593), (4403, 4606)]