639630

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{103}}^1$

素因数の和:142

約数の個数: 64

約数和(自身を含む): 1797120

約数和(自身を除く): 1157490

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 23, 27, 30, 45, 46, 54, 69, 90, 103, 115, 135, 138, 206, 207, 230, 270, 309, 345, 414, 515, 618, 621, 690, 927, 1030, 1035, 1242, 1545, 1854, 2070, 2369, 2781, 3090, 3105, 4635, 4738, 5562, 6210, 7107, 9270, 11845, 13905, 14214, 21321, 23690, 27810, 35535, 42642, 63963, 71070, 106605, 127926, 213210, 319815, 639630]

約数ペア:

[(1, 639630), (2, 319815), (3, 213210), (5, 127926), (6, 106605), (9, 71070), (10, 63963), (15, 42642), (18, 35535), (23, 27810), (27, 23690), (30, 21321), (45, 14214), (46, 13905), (54, 11845), (69, 9270), (90, 7107), (103, 6210), (115, 5562), (135, 4738), (138, 4635), (206, 3105), (207, 3090), (230, 2781), (270, 2369), (309, 2070), (345, 1854), (414, 1545), (515, 1242), (618, 1035), (621, 1030), (690, 927)]