17654620

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{499}}^1$

素因数の和:598

約数の個数: 48

約数和(自身を含む): 39060000

約数和(自身を除く): 21405380

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 61, 116, 122, 145, 244, 290, 305, 499, 580, 610, 998, 1220, 1769, 1996, 2495, 3538, 4990, 7076, 8845, 9980, 14471, 17690, 28942, 30439, 35380, 57884, 60878, 72355, 121756, 144710, 152195, 289420, 304390, 608780, 882731, 1765462, 3530924, 4413655, 8827310, 17654620]

約数ペア:

[(1, 17654620), (2, 8827310), (4, 4413655), (5, 3530924), (10, 1765462), (20, 882731), (29, 608780), (58, 304390), (61, 289420), (116, 152195), (122, 144710), (145, 121756), (244, 72355), (290, 60878), (305, 57884), (499, 35380), (580, 30439), (610, 28942), (998, 17690), (1220, 14471), (1769, 9980), (1996, 8845), (2495, 7076), (3538, 4990)]