12890020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{4507}}^1$

素因数の和:4540

約数の個数: 48

約数和(自身を含む): 31808448

約数和(自身を除く): 18918428

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, 4507, 9014, 18028, 22535, 45070, 49577, 58591, 90140, 99154, 117182, 198308, 234364, 247885, 292955, 495770, 585910, 644501, 991540, 1171820, 1289002, 2578004, 3222505, 6445010, 12890020]

約数ペア:

[(1, 12890020), (2, 6445010), (4, 3222505), (5, 2578004), (10, 1289002), (11, 1171820), (13, 991540), (20, 644501), (22, 585910), (26, 495770), (44, 292955), (52, 247885), (55, 234364), (65, 198308), (110, 117182), (130, 99154), (143, 90140), (220, 58591), (260, 49577), (286, 45070), (572, 22535), (715, 18028), (1430, 9014), (2860, 4507)]