18643760

素因数分解:

$2^4\times 5^1\times {\mathrm{241}}^1\times {\mathrm{967}}^1$

素因数の和:1221

約数の個数: 40

約数和(自身を含む): 43571616

約数和(自身を除く): 24927856

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 241, 482, 964, 967, 1205, 1928, 1934, 2410, 3856, 3868, 4820, 4835, 7736, 9640, 9670, 15472, 19280, 19340, 38680, 77360, 233047, 466094, 932188, 1165235, 1864376, 2330470, 3728752, 4660940, 9321880, 18643760]

約数ペア:

[(1, 18643760), (2, 9321880), (4, 4660940), (5, 3728752), (8, 2330470), (10, 1864376), (16, 1165235), (20, 932188), (40, 466094), (80, 233047), (241, 77360), (482, 38680), (964, 19340), (967, 19280), (1205, 15472), (1928, 9670), (1934, 9640), (2410, 7736), (3856, 4835), (3868, 4820)]