353973140

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{397}}^1\times {\mathrm{409}}^1$

素因数の和:924

約数の個数: 48

約数和(自身を含む): 753891600

約数和(自身を除く): 399918460

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 397, 409, 436, 545, 794, 818, 1090, 1588, 1636, 1985, 2045, 2180, 3970, 4090, 7940, 8180, 43273, 44581, 86546, 89162, 162373, 173092, 178324, 216365, 222905, 324746, 432730, 445810, 649492, 811865, 865460, 891620, 1623730, 3247460, 17698657, 35397314, 70794628, 88493285, 176986570, 353973140]

約数ペア:

[(1, 353973140), (2, 176986570), (4, 88493285), (5, 70794628), (10, 35397314), (20, 17698657), (109, 3247460), (218, 1623730), (397, 891620), (409, 865460), (436, 811865), (545, 649492), (794, 445810), (818, 432730), (1090, 324746), (1588, 222905), (1636, 216365), (1985, 178324), (2045, 173092), (2180, 162373), (3970, 89162), (4090, 86546), (7940, 44581), (8180, 43273)]