4080236560

素因数分解:

$2^4\times 5^1\times {\mathrm{389}}^1\times {\mathrm{131113}}^1$

素因数の和:131515

約数の個数: 40

約数和(自身を含む): 9511009560

約数和(自身を除く): 5430773000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 389, 778, 1556, 1945, 3112, 3890, 6224, 7780, 15560, 31120, 131113, 262226, 524452, 655565, 1048904, 1311130, 2097808, 2622260, 5244520, 10489040, 51002957, 102005914, 204011828, 255014785, 408023656, 510029570, 816047312, 1020059140, 2040118280, 4080236560]

約数ペア:

[(1, 4080236560), (2, 2040118280), (4, 1020059140), (5, 816047312), (8, 510029570), (10, 408023656), (16, 255014785), (20, 204011828), (40, 102005914), (80, 51002957), (389, 10489040), (778, 5244520), (1556, 2622260), (1945, 2097808), (3112, 1311130), (3890, 1048904), (6224, 655565), (7780, 524452), (15560, 262226), (31120, 131113)]