20612020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{7207}}^1$

素因数の和:7240

約数の個数: 48

約数和(自身を含む): 50859648

約数和(自身を除く): 30247628

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 110, 130, 143, 220, 260, 286, 572, 715, 1430, 2860, 7207, 14414, 28828, 36035, 72070, 79277, 93691, 144140, 158554, 187382, 317108, 374764, 396385, 468455, 792770, 936910, 1030601, 1585540, 1873820, 2061202, 4122404, 5153005, 10306010, 20612020]

約数ペア:

[(1, 20612020), (2, 10306010), (4, 5153005), (5, 4122404), (10, 2061202), (11, 1873820), (13, 1585540), (20, 1030601), (22, 936910), (26, 792770), (44, 468455), (52, 396385), (55, 374764), (65, 317108), (110, 187382), (130, 158554), (143, 144140), (220, 93691), (260, 79277), (286, 72070), (572, 36035), (715, 28828), (1430, 14414), (2860, 7207)]