393292720

素因数分解:

$2^4\times 5^1\times {\mathrm{241}}^1\times {\mathrm{20399}}^1$

素因数の和:20653

約数の個数: 40

約数和(自身を含む): 918244800

約数和(自身を除く): 524952080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 241, 482, 964, 1205, 1928, 2410, 3856, 4820, 9640, 19280, 20399, 40798, 81596, 101995, 163192, 203990, 326384, 407980, 815960, 1631920, 4916159, 9832318, 19664636, 24580795, 39329272, 49161590, 78658544, 98323180, 196646360, 393292720]

約数ペア:

[(1, 393292720), (2, 196646360), (4, 98323180), (5, 78658544), (8, 49161590), (10, 39329272), (16, 24580795), (20, 19664636), (40, 9832318), (80, 4916159), (241, 1631920), (482, 815960), (964, 407980), (1205, 326384), (1928, 203990), (2410, 163192), (3856, 101995), (4820, 81596), (9640, 40798), (19280, 20399)]