18818150

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{131}}^1$

素因数の和:186

約数の個数: 72

約数和(自身を含む): 40437144

約数和(自身を除く): 21618994

約数列:

[1, 2, 5, 10, 13, 17, 25, 26, 34, 50, 65, 85, 130, 131, 169, 170, 221, 262, 325, 338, 425, 442, 650, 655, 845, 850, 1105, 1310, 1690, 1703, 2210, 2227, 2873, 3275, 3406, 4225, 4454, 5525, 5746, 6550, 8450, 8515, 11050, 11135, 14365, 17030, 22139, 22270, 28730, 28951, 42575, 44278, 55675, 57902, 71825, 85150, 110695, 111350, 143650, 144755, 221390, 289510, 376363, 553475, 723775, 752726, 1106950, 1447550, 1881815, 3763630, 9409075, 18818150]

約数ペア:

[(1, 18818150), (2, 9409075), (5, 3763630), (10, 1881815), (13, 1447550), (17, 1106950), (25, 752726), (26, 723775), (34, 553475), (50, 376363), (65, 289510), (85, 221390), (130, 144755), (131, 143650), (169, 111350), (170, 110695), (221, 85150), (262, 71825), (325, 57902), (338, 55675), (425, 44278), (442, 42575), (650, 28951), (655, 28730), (845, 22270), (850, 22139), (1105, 17030), (1310, 14365), (1690, 11135), (1703, 11050), (2210, 8515), (2227, 8450), (2873, 6550), (3275, 5746), (3406, 5525), (4225, 4454)]