20156968

素因数分解:

$2^3\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{877}}^1$

素因数の和:926

約数の個数: 48

約数和(自身を含む): 43381980

約数和(自身を除く): 23225012

約数列:

[1, 2, 4, 8, 13, 17, 26, 34, 52, 68, 104, 136, 169, 221, 338, 442, 676, 877, 884, 1352, 1754, 1768, 2873, 3508, 5746, 7016, 11401, 11492, 14909, 22802, 22984, 29818, 45604, 59636, 91208, 119272, 148213, 193817, 296426, 387634, 592852, 775268, 1185704, 1550536, 2519621, 5039242, 10078484, 20156968]

約数ペア:

[(1, 20156968), (2, 10078484), (4, 5039242), (8, 2519621), (13, 1550536), (17, 1185704), (26, 775268), (34, 592852), (52, 387634), (68, 296426), (104, 193817), (136, 148213), (169, 119272), (221, 91208), (338, 59636), (442, 45604), (676, 29818), (877, 22984), (884, 22802), (1352, 14909), (1754, 11492), (1768, 11401), (2873, 7016), (3508, 5746)]