28273336

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{547}}^1$

素因数の和:644

約数の個数: 64

約数和(自身を含む): 66286080

約数和(自身を除く): 38012744

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 71, 91, 104, 142, 182, 284, 364, 497, 547, 568, 728, 923, 994, 1094, 1846, 1988, 2188, 3692, 3829, 3976, 4376, 6461, 7111, 7384, 7658, 12922, 14222, 15316, 25844, 28444, 30632, 38837, 49777, 51688, 56888, 77674, 99554, 155348, 199108, 271859, 310696, 398216, 504881, 543718, 1009762, 1087436, 2019524, 2174872, 3534167, 4039048, 7068334, 14136668, 28273336]

約数ペア:

[(1, 28273336), (2, 14136668), (4, 7068334), (7, 4039048), (8, 3534167), (13, 2174872), (14, 2019524), (26, 1087436), (28, 1009762), (52, 543718), (56, 504881), (71, 398216), (91, 310696), (104, 271859), (142, 199108), (182, 155348), (284, 99554), (364, 77674), (497, 56888), (547, 51688), (568, 49777), (728, 38837), (923, 30632), (994, 28444), (1094, 25844), (1846, 15316), (1988, 14222), (2188, 12922), (3692, 7658), (3829, 7384), (3976, 7111), (4376, 6461)]