64604020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{248477}}^1$

素因数の和:248499

約数の個数: 24

約数和(自身を含む): 146105064

約数和(自身を除く): 81501044

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 248477, 496954, 993908, 1242385, 2484770, 3230201, 4969540, 6460402, 12920804, 16151005, 32302010, 64604020]

約数ペア:

[(1, 64604020), (2, 32302010), (4, 16151005), (5, 12920804), (10, 6460402), (13, 4969540), (20, 3230201), (26, 2484770), (52, 1242385), (65, 993908), (130, 496954), (260, 248477)]