639601963

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{2137}}^1$

素因数の和:2204

約数の個数: 48

約数和(自身を含む): 901449216

約数和(自身を除く): 261847253

約数列:

[1, 7, 11, 13, 23, 77, 91, 143, 161, 169, 253, 299, 1001, 1183, 1771, 1859, 2093, 2137, 3289, 3887, 13013, 14959, 23023, 23507, 27209, 27781, 42757, 49151, 164549, 194467, 299299, 305591, 344057, 361153, 540661, 638963, 2139137, 2528071, 3784627, 3972683, 4472741, 7028593, 8306519, 27808781, 49200151, 58145633, 91371709, 639601963]

約数ペア:

[(1, 639601963), (7, 91371709), (11, 58145633), (13, 49200151), (23, 27808781), (77, 8306519), (91, 7028593), (143, 4472741), (161, 3972683), (169, 3784627), (253, 2528071), (299, 2139137), (1001, 638963), (1183, 540661), (1771, 361153), (1859, 344057), (2093, 305591), (2137, 299299), (3289, 194467), (3887, 164549), (13013, 49151), (14959, 42757), (23023, 27781), (23507, 27209)]