12788020

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{13049}}^1$

素因数の和:13072

約数の個数: 36

約数和(自身を含む): 31241700

約数和(自身を除く): 18453680

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 13049, 26098, 52196, 65245, 91343, 130490, 182686, 260980, 365372, 456715, 639401, 913430, 1278802, 1826860, 2557604, 3197005, 6394010, 12788020]

約数ペア:

[(1, 12788020), (2, 6394010), (4, 3197005), (5, 2557604), (7, 1826860), (10, 1278802), (14, 913430), (20, 639401), (28, 456715), (35, 365372), (49, 260980), (70, 182686), (98, 130490), (140, 91343), (196, 65245), (245, 52196), (490, 26098), (980, 13049)]