28053519

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{131}}^1$

素因数の和:200

約数の個数: 48

約数和(自身を含む): 45386880

約数和(自身を除く): 17333361

約数列:

[1, 3, 13, 17, 19, 39, 51, 57, 131, 221, 247, 289, 323, 393, 663, 741, 867, 969, 1703, 2227, 2489, 3757, 4199, 5109, 5491, 6681, 7467, 11271, 12597, 16473, 28951, 32357, 37859, 42313, 71383, 86853, 97071, 113577, 126939, 214149, 492167, 550069, 719321, 1476501, 1650207, 2157963, 9351173, 28053519]

約数ペア:

[(1, 28053519), (3, 9351173), (13, 2157963), (17, 1650207), (19, 1476501), (39, 719321), (51, 550069), (57, 492167), (131, 214149), (221, 126939), (247, 113577), (289, 97071), (323, 86853), (393, 71383), (663, 42313), (741, 37859), (867, 32357), (969, 28951), (1703, 16473), (2227, 12597), (2489, 11271), (3757, 7467), (4199, 6681), (5109, 5491)]