78418840

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{63241}}^1$

素因数の和:63283

約数の個数: 32

約数和(自身を含む): 182136960

約数和(自身を除く): 103718120

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 63241, 126482, 252964, 316205, 505928, 632410, 1264820, 1960471, 2529640, 3920942, 7841884, 9802355, 15683768, 19604710, 39209420, 78418840]

約数ペア:

[(1, 78418840), (2, 39209420), (4, 19604710), (5, 15683768), (8, 9802355), (10, 7841884), (20, 3920942), (31, 2529640), (40, 1960471), (62, 1264820), (124, 632410), (155, 505928), (248, 316205), (310, 252964), (620, 126482), (1240, 63241)]