21995470

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{199}}^1\times {\mathrm{1579}}^1$

素因数の和:1792

約数の個数: 32

約数和(自身を含む): 45504000

約数和(自身を除く): 23508530

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 199, 398, 995, 1393, 1579, 1990, 2786, 3158, 6965, 7895, 11053, 13930, 15790, 22106, 55265, 110530, 314221, 628442, 1571105, 2199547, 3142210, 4399094, 10997735, 21995470]

約数ペア:

[(1, 21995470), (2, 10997735), (5, 4399094), (7, 3142210), (10, 2199547), (14, 1571105), (35, 628442), (70, 314221), (199, 110530), (398, 55265), (995, 22106), (1393, 15790), (1579, 13930), (1990, 11053), (2786, 7895), (3158, 6965)]