421721020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{1103}}^1\times {\mathrm{2731}}^1$

素因数の和:3850

約数の個数: 48

約数和(自身を含む): 1013419008

約数和(自身を除く): 591697988

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 1103, 2206, 2731, 4412, 5462, 5515, 7721, 10924, 11030, 13655, 15442, 19117, 22060, 27310, 30884, 38234, 38605, 54620, 76468, 77210, 95585, 154420, 191170, 382340, 3012293, 6024586, 12049172, 15061465, 21086051, 30122930, 42172102, 60245860, 84344204, 105430255, 210860510, 421721020]

約数ペア:

[(1, 421721020), (2, 210860510), (4, 105430255), (5, 84344204), (7, 60245860), (10, 42172102), (14, 30122930), (20, 21086051), (28, 15061465), (35, 12049172), (70, 6024586), (140, 3012293), (1103, 382340), (2206, 191170), (2731, 154420), (4412, 95585), (5462, 77210), (5515, 76468), (7721, 54620), (10924, 38605), (11030, 38234), (13655, 30884), (15442, 27310), (19117, 22060)]