20266720

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{7451}}^1$

素因数の和:7483

約数の個数: 48

約数和(自身を含む): 50703408

約数和(自身を除く): 30436688

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, 7451, 14902, 29804, 37255, 59608, 74510, 119216, 126667, 149020, 238432, 253334, 298040, 506668, 596080, 633335, 1013336, 1192160, 1266670, 2026672, 2533340, 4053344, 5066680, 10133360, 20266720]

約数ペア:

[(1, 20266720), (2, 10133360), (4, 5066680), (5, 4053344), (8, 2533340), (10, 2026672), (16, 1266670), (17, 1192160), (20, 1013336), (32, 633335), (34, 596080), (40, 506668), (68, 298040), (80, 253334), (85, 238432), (136, 149020), (160, 126667), (170, 119216), (272, 74510), (340, 59608), (544, 37255), (680, 29804), (1360, 14902), (2720, 7451)]