17991350

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{311}}^1$

素因数の和:425

約数の個数: 48

約数和(自身を含む): 36560160

約数和(自身を除く): 18568810

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 89, 130, 178, 311, 325, 445, 622, 650, 890, 1157, 1555, 2225, 2314, 3110, 4043, 4450, 5785, 7775, 8086, 11570, 15550, 20215, 27679, 28925, 40430, 55358, 57850, 101075, 138395, 202150, 276790, 359827, 691975, 719654, 1383950, 1799135, 3598270, 8995675, 17991350]

約数ペア:

[(1, 17991350), (2, 8995675), (5, 3598270), (10, 1799135), (13, 1383950), (25, 719654), (26, 691975), (50, 359827), (65, 276790), (89, 202150), (130, 138395), (178, 101075), (311, 57850), (325, 55358), (445, 40430), (622, 28925), (650, 27679), (890, 20215), (1157, 15550), (1555, 11570), (2225, 8086), (2314, 7775), (3110, 5785), (4043, 4450)]