20381140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1823}}^1$

素因数の和:1888

約数の個数: 48

約数和(自身を含む): 47190528

約数和(自身を除く): 26809388

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 43, 52, 65, 86, 130, 172, 215, 260, 430, 559, 860, 1118, 1823, 2236, 2795, 3646, 5590, 7292, 9115, 11180, 18230, 23699, 36460, 47398, 78389, 94796, 118495, 156778, 236990, 313556, 391945, 473980, 783890, 1019057, 1567780, 2038114, 4076228, 5095285, 10190570, 20381140]

約数ペア:

[(1, 20381140), (2, 10190570), (4, 5095285), (5, 4076228), (10, 2038114), (13, 1567780), (20, 1019057), (26, 783890), (43, 473980), (52, 391945), (65, 313556), (86, 236990), (130, 156778), (172, 118495), (215, 94796), (260, 78389), (430, 47398), (559, 36460), (860, 23699), (1118, 18230), (1823, 11180), (2236, 9115), (2795, 7292), (3646, 5590)]