21197680

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{37853}}^1$

素因数の和:37873

約数の個数: 40

約数和(自身を含む): 56326752

約数和(自身を除く): 35129072

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 37853, 75706, 151412, 189265, 264971, 302824, 378530, 529942, 605648, 757060, 1059884, 1324855, 1514120, 2119768, 2649710, 3028240, 4239536, 5299420, 10598840, 21197680]

約数ペア:

[(1, 21197680), (2, 10598840), (4, 5299420), (5, 4239536), (7, 3028240), (8, 2649710), (10, 2119768), (14, 1514120), (16, 1324855), (20, 1059884), (28, 757060), (35, 605648), (40, 529942), (56, 378530), (70, 302824), (80, 264971), (112, 189265), (140, 151412), (280, 75706), (560, 37853)]