28640440

素因数分解:

$2^3\times 5^1\times {\mathrm{241}}^1\times {\mathrm{2971}}^1$

素因数の和:3223

約数の個数: 32

約数和(自身を含む): 64730160

約数和(自身を除く): 36089720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 241, 482, 964, 1205, 1928, 2410, 2971, 4820, 5942, 9640, 11884, 14855, 23768, 29710, 59420, 118840, 716011, 1432022, 2864044, 3580055, 5728088, 7160110, 14320220, 28640440]

約数ペア:

[(1, 28640440), (2, 14320220), (4, 7160110), (5, 5728088), (8, 3580055), (10, 2864044), (20, 1432022), (40, 716011), (241, 118840), (482, 59420), (964, 29710), (1205, 23768), (1928, 14855), (2410, 11884), (2971, 9640), (4820, 5942)]