640996668

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{1369651}}^1$

素因数の和:1369674

約数の個数: 36

約数和(自身を含む): 1744936648

約数和(自身を除く): 1103939980

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 117, 156, 234, 468, 1369651, 2739302, 4108953, 5478604, 8217906, 12326859, 16435812, 17805463, 24653718, 35610926, 49307436, 53416389, 71221852, 106832778, 160249167, 213665556, 320498334, 640996668]

約数ペア:

[(1, 640996668), (2, 320498334), (3, 213665556), (4, 160249167), (6, 106832778), (9, 71221852), (12, 53416389), (13, 49307436), (18, 35610926), (26, 24653718), (36, 17805463), (39, 16435812), (52, 12326859), (78, 8217906), (117, 5478604), (156, 4108953), (234, 2739302), (468, 1369651)]