21140510

素因数分解:

$2^1\times 5^1\times {\mathrm{67}}^1\times {\mathrm{139}}^1\times {\mathrm{227}}^1$

素因数の和:440

約数の個数: 32

約数和(自身を含む): 39070080

約数和(自身を除く): 17929570

約数列:

[1, 2, 5, 10, 67, 134, 139, 227, 278, 335, 454, 670, 695, 1135, 1390, 2270, 9313, 15209, 18626, 30418, 31553, 46565, 63106, 76045, 93130, 152090, 157765, 315530, 2114051, 4228102, 10570255, 21140510]

約数ペア:

[(1, 21140510), (2, 10570255), (5, 4228102), (10, 2114051), (67, 315530), (134, 157765), (139, 152090), (227, 93130), (278, 76045), (335, 63106), (454, 46565), (670, 31553), (695, 30418), (1135, 18626), (1390, 15209), (2270, 9313)]