389635220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{21107}}^1$

素因数の和:21200

約数の個数: 48

約数和(自身を含む): 893628288

約数和(自身を除く): 503993068

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 71, 130, 142, 260, 284, 355, 710, 923, 1420, 1846, 3692, 4615, 9230, 18460, 21107, 42214, 84428, 105535, 211070, 274391, 422140, 548782, 1097564, 1371955, 1498597, 2743910, 2997194, 5487820, 5994388, 7492985, 14985970, 19481761, 29971940, 38963522, 77927044, 97408805, 194817610, 389635220]

約数ペア:

[(1, 389635220), (2, 194817610), (4, 97408805), (5, 77927044), (10, 38963522), (13, 29971940), (20, 19481761), (26, 14985970), (52, 7492985), (65, 5994388), (71, 5487820), (130, 2997194), (142, 2743910), (260, 1498597), (284, 1371955), (355, 1097564), (710, 548782), (923, 422140), (1420, 274391), (1846, 211070), (3692, 105535), (4615, 84428), (9230, 42214), (18460, 21107)]