1390985840

素因数分解:

$2^4\times 5^1\times {\mathrm{1861}}^1\times {\mathrm{9343}}^1$

素因数の和:11217

約数の個数: 40

約数和(自身を含む): 3236126208

約数和(自身を除く): 1845140368

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1861, 3722, 7444, 9305, 9343, 14888, 18610, 18686, 29776, 37220, 37372, 46715, 74440, 74744, 93430, 148880, 149488, 186860, 373720, 747440, 17387323, 34774646, 69549292, 86936615, 139098584, 173873230, 278197168, 347746460, 695492920, 1390985840]

約数ペア:

[(1, 1390985840), (2, 695492920), (4, 347746460), (5, 278197168), (8, 173873230), (10, 139098584), (16, 86936615), (20, 69549292), (40, 34774646), (80, 17387323), (1861, 747440), (3722, 373720), (7444, 186860), (9305, 149488), (9343, 148880), (14888, 93430), (18610, 74744), (18686, 74440), (29776, 46715), (37220, 37372)]