81615456

素因数分解:

$2^5\times 3^2\times {\mathrm{13}}^1\times {\mathrm{21799}}^1$

素因数の和:21828

約数の個数: 72

約数和(自身を含む): 249958800

約数和(自身を除く): 168343344

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 16, 18, 24, 26, 32, 36, 39, 48, 52, 72, 78, 96, 104, 117, 144, 156, 208, 234, 288, 312, 416, 468, 624, 936, 1248, 1872, 3744, 21799, 43598, 65397, 87196, 130794, 174392, 196191, 261588, 283387, 348784, 392382, 523176, 566774, 697568, 784764, 850161, 1046352, 1133548, 1569528, 1700322, 2092704, 2267096, 2550483, 3139056, 3400644, 4534192, 5100966, 6278112, 6801288, 9068384, 10201932, 13602576, 20403864, 27205152, 40807728, 81615456]

約数ペア:

[(1, 81615456), (2, 40807728), (3, 27205152), (4, 20403864), (6, 13602576), (8, 10201932), (9, 9068384), (12, 6801288), (13, 6278112), (16, 5100966), (18, 4534192), (24, 3400644), (26, 3139056), (32, 2550483), (36, 2267096), (39, 2092704), (48, 1700322), (52, 1569528), (72, 1133548), (78, 1046352), (96, 850161), (104, 784764), (117, 697568), (144, 566774), (156, 523176), (208, 392382), (234, 348784), (288, 283387), (312, 261588), (416, 196191), (468, 174392), (624, 130794), (936, 87196), (1248, 65397), (1872, 43598), (3744, 21799)]