42162020

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{103}}^1\times {\mathrm{211}}^1$

素因数の和:420

約数の個数: 48

約数和(自身を含む): 90749568

約数和(自身を除く): 48587548

約数列:

[1, 2, 4, 5, 10, 20, 97, 103, 194, 206, 211, 388, 412, 422, 485, 515, 844, 970, 1030, 1055, 1940, 2060, 2110, 4220, 9991, 19982, 20467, 21733, 39964, 40934, 43466, 49955, 81868, 86932, 99910, 102335, 108665, 199820, 204670, 217330, 409340, 434660, 2108101, 4216202, 8432404, 10540505, 21081010, 42162020]

約数ペア:

[(1, 42162020), (2, 21081010), (4, 10540505), (5, 8432404), (10, 4216202), (20, 2108101), (97, 434660), (103, 409340), (194, 217330), (206, 204670), (211, 199820), (388, 108665), (412, 102335), (422, 99910), (485, 86932), (515, 81868), (844, 49955), (970, 43466), (1030, 40934), (1055, 39964), (1940, 21733), (2060, 20467), (2110, 19982), (4220, 9991)]