645996

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{101}}^1$

素因数の和:162

約数の個数: 48

約数和(自身を含む): 1679328

約数和(自身を除く): 1033332

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 41, 52, 78, 82, 101, 123, 156, 164, 202, 246, 303, 404, 492, 533, 606, 1066, 1212, 1313, 1599, 2132, 2626, 3198, 3939, 4141, 5252, 6396, 7878, 8282, 12423, 15756, 16564, 24846, 49692, 53833, 107666, 161499, 215332, 322998, 645996]

約数ペア:

[(1, 645996), (2, 322998), (3, 215332), (4, 161499), (6, 107666), (12, 53833), (13, 49692), (26, 24846), (39, 16564), (41, 15756), (52, 12423), (78, 8282), (82, 7878), (101, 6396), (123, 5252), (156, 4141), (164, 3939), (202, 3198), (246, 2626), (303, 2132), (404, 1599), (492, 1313), (533, 1212), (606, 1066)]