18199520

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{6691}}^1$

素因数の和:6723

約数の個数: 48

約数和(自身を含む): 45532368

約数和(自身を除く): 27332848

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 68, 80, 85, 136, 160, 170, 272, 340, 544, 680, 1360, 2720, 6691, 13382, 26764, 33455, 53528, 66910, 107056, 113747, 133820, 214112, 227494, 267640, 454988, 535280, 568735, 909976, 1070560, 1137470, 1819952, 2274940, 3639904, 4549880, 9099760, 18199520]

約数ペア:

[(1, 18199520), (2, 9099760), (4, 4549880), (5, 3639904), (8, 2274940), (10, 1819952), (16, 1137470), (17, 1070560), (20, 909976), (32, 568735), (34, 535280), (40, 454988), (68, 267640), (80, 227494), (85, 214112), (136, 133820), (160, 113747), (170, 107056), (272, 66910), (340, 53528), (544, 33455), (680, 26764), (1360, 13382), (2720, 6691)]