18563720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{167}}^1\times {\mathrm{397}}^1$

素因数の和:582

約数の個数: 64

約数和(自身を含む): 48142080

約数和(自身を除く): 29578360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 167, 280, 334, 397, 668, 794, 835, 1169, 1336, 1588, 1670, 1985, 2338, 2779, 3176, 3340, 3970, 4676, 5558, 5845, 6680, 7940, 9352, 11116, 11690, 13895, 15880, 22232, 23380, 27790, 46760, 55580, 66299, 111160, 132598, 265196, 331495, 464093, 530392, 662990, 928186, 1325980, 1856372, 2320465, 2651960, 3712744, 4640930, 9281860, 18563720]

約数ペア:

[(1, 18563720), (2, 9281860), (4, 4640930), (5, 3712744), (7, 2651960), (8, 2320465), (10, 1856372), (14, 1325980), (20, 928186), (28, 662990), (35, 530392), (40, 464093), (56, 331495), (70, 265196), (140, 132598), (167, 111160), (280, 66299), (334, 55580), (397, 46760), (668, 27790), (794, 23380), (835, 22232), (1169, 15880), (1336, 13895), (1588, 11690), (1670, 11116), (1985, 9352), (2338, 7940), (2779, 6680), (3176, 5845), (3340, 5558), (3970, 4676)]