18985840

素因数分解:

$2^4\times 5^1\times {\mathrm{73}}^1\times {\mathrm{3251}}^1$

素因数の和:3337

約数の個数: 40

約数和(自身を含む): 44760528

約数和(自身を除く): 25774688

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 73, 80, 146, 292, 365, 584, 730, 1168, 1460, 2920, 3251, 5840, 6502, 13004, 16255, 26008, 32510, 52016, 65020, 130040, 237323, 260080, 474646, 949292, 1186615, 1898584, 2373230, 3797168, 4746460, 9492920, 18985840]

約数ペア:

[(1, 18985840), (2, 9492920), (4, 4746460), (5, 3797168), (8, 2373230), (10, 1898584), (16, 1186615), (20, 949292), (40, 474646), (73, 260080), (80, 237323), (146, 130040), (292, 65020), (365, 52016), (584, 32510), (730, 26008), (1168, 16255), (1460, 13004), (2920, 6502), (3251, 5840)]