79780220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{306847}}^1$

素因数の和:306869

約数の個数: 24

約数和(自身を含む): 180426624

約数和(自身を除く): 100646404

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 306847, 613694, 1227388, 1534235, 3068470, 3989011, 6136940, 7978022, 15956044, 19945055, 39890110, 79780220]

約数ペア:

[(1, 79780220), (2, 39890110), (4, 19945055), (5, 15956044), (10, 7978022), (13, 6136940), (20, 3989011), (26, 3068470), (52, 1534235), (65, 1227388), (130, 613694), (260, 306847)]