81842644

素因数分解:

$2^2\times {\mathrm{13}}^3\times {\mathrm{67}}^1\times {\mathrm{139}}^1$

素因数の和:249

約数の個数: 48

約数和(自身を含む): 158603200

約数和(自身を除く): 76760556

約数列:

[1, 2, 4, 13, 26, 52, 67, 134, 139, 169, 268, 278, 338, 556, 676, 871, 1742, 1807, 2197, 3484, 3614, 4394, 7228, 8788, 9313, 11323, 18626, 22646, 23491, 37252, 45292, 46982, 93964, 121069, 147199, 242138, 294398, 305383, 484276, 588796, 610766, 1221532, 1573897, 3147794, 6295588, 20460661, 40921322, 81842644]

約数ペア:

[(1, 81842644), (2, 40921322), (4, 20460661), (13, 6295588), (26, 3147794), (52, 1573897), (67, 1221532), (134, 610766), (139, 588796), (169, 484276), (268, 305383), (278, 294398), (338, 242138), (556, 147199), (676, 121069), (871, 93964), (1742, 46982), (1807, 45292), (2197, 37252), (3484, 23491), (3614, 22646), (4394, 18626), (7228, 11323), (8788, 9313)]