77770120

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{31873}}^1$

素因数の和:31945

約数の個数: 32

約数和(自身を含む): 177856920

約数和(自身を除く): 100086800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 31873, 63746, 127492, 159365, 254984, 318730, 637460, 1274920, 1944253, 3888506, 7777012, 9721265, 15554024, 19442530, 38885060, 77770120]

約数ペア:

[(1, 77770120), (2, 38885060), (4, 19442530), (5, 15554024), (8, 9721265), (10, 7777012), (20, 3888506), (40, 1944253), (61, 1274920), (122, 637460), (244, 318730), (305, 254984), (488, 159365), (610, 127492), (1220, 63746), (2440, 31873)]