21258796

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{21517}}^1$

素因数の和:21553

約数の個数: 24

約数和(自身を含む): 42175280

約数和(自身を除く): 20916484

約数列:

[1, 2, 4, 13, 19, 26, 38, 52, 76, 247, 494, 988, 21517, 43034, 86068, 279721, 408823, 559442, 817646, 1118884, 1635292, 5314699, 10629398, 21258796]

約数ペア:

[(1, 21258796), (2, 10629398), (4, 5314699), (13, 1635292), (19, 1118884), (26, 817646), (38, 559442), (52, 408823), (76, 279721), (247, 86068), (494, 43034), (988, 21517)]