18941260

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{263}}^1\times {\mathrm{277}}^1$

素因数の和:562

約数の個数: 48

約数和(自身を含む): 43154496

約数和(自身を除く): 24213236

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 263, 277, 526, 554, 1052, 1108, 1315, 1385, 2630, 2770, 3419, 3601, 5260, 5540, 6838, 7202, 13676, 14404, 17095, 18005, 34190, 36010, 68380, 72020, 72851, 145702, 291404, 364255, 728510, 947063, 1457020, 1894126, 3788252, 4735315, 9470630, 18941260]

約数ペア:

[(1, 18941260), (2, 9470630), (4, 4735315), (5, 3788252), (10, 1894126), (13, 1457020), (20, 947063), (26, 728510), (52, 364255), (65, 291404), (130, 145702), (260, 72851), (263, 72020), (277, 68380), (526, 36010), (554, 34190), (1052, 18005), (1108, 17095), (1315, 14404), (1385, 13676), (2630, 7202), (2770, 6838), (3419, 5540), (3601, 5260)]