217675521

素因数分解:

$3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{227}}^1\times {\mathrm{491}}^1$

素因数の和:762

約数の個数: 48

約数和(自身を含む): 373321728

約数和(自身を除く): 155646207

約数列:

[1, 3, 7, 9, 21, 31, 63, 93, 217, 227, 279, 491, 651, 681, 1473, 1589, 1953, 2043, 3437, 4419, 4767, 7037, 10311, 14301, 15221, 21111, 30933, 45663, 49259, 63333, 106547, 111457, 136989, 147777, 319641, 334371, 443331, 780199, 958923, 1003113, 2340597, 3455167, 7021791, 10365501, 24186169, 31096503, 72558507, 217675521]

約数ペア:

[(1, 217675521), (3, 72558507), (7, 31096503), (9, 24186169), (21, 10365501), (31, 7021791), (63, 3455167), (93, 2340597), (217, 1003113), (227, 958923), (279, 780199), (491, 443331), (651, 334371), (681, 319641), (1473, 147777), (1589, 136989), (1953, 111457), (2043, 106547), (3437, 63333), (4419, 49259), (4767, 45663), (7037, 30933), (10311, 21111), (14301, 15221)]