18306340

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{181}}^1\times {\mathrm{389}}^1$

素因数の和:592

約数の個数: 48

約数和(自身を含む): 41736240

約数和(自身を除く): 23429900

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 181, 260, 362, 389, 724, 778, 905, 1556, 1810, 1945, 2353, 3620, 3890, 4706, 5057, 7780, 9412, 10114, 11765, 20228, 23530, 25285, 47060, 50570, 70409, 101140, 140818, 281636, 352045, 704090, 915317, 1408180, 1830634, 3661268, 4576585, 9153170, 18306340]

約数ペア:

[(1, 18306340), (2, 9153170), (4, 4576585), (5, 3661268), (10, 1830634), (13, 1408180), (20, 915317), (26, 704090), (52, 352045), (65, 281636), (130, 140818), (181, 101140), (260, 70409), (362, 50570), (389, 47060), (724, 25285), (778, 23530), (905, 20228), (1556, 11765), (1810, 10114), (1945, 9412), (2353, 7780), (3620, 5057), (3890, 4706)]