639756

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{1367}}^1$

素因数の和:1390

約数の個数: 36

約数和(自身を含む): 1742832

約数和(自身を除く): 1103076

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 117, 156, 234, 468, 1367, 2734, 4101, 5468, 8202, 12303, 16404, 17771, 24606, 35542, 49212, 53313, 71084, 106626, 159939, 213252, 319878, 639756]

約数ペア:

[(1, 639756), (2, 319878), (3, 213252), (4, 159939), (6, 106626), (9, 71084), (12, 53313), (13, 49212), (18, 35542), (26, 24606), (36, 17771), (39, 16404), (52, 12303), (78, 8202), (117, 5468), (156, 4101), (234, 2734), (468, 1367)]