81438256

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{3391}}^1$

素因数の和:3497

約数の個数: 40

約数和(自身を含む): 168243200

約数和(自身を除く): 86804944

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 79, 152, 158, 304, 316, 632, 1264, 1501, 3002, 3391, 6004, 6782, 12008, 13564, 24016, 27128, 54256, 64429, 128858, 257716, 267889, 515432, 535778, 1030864, 1071556, 2143112, 4286224, 5089891, 10179782, 20359564, 40719128, 81438256]

約数ペア:

[(1, 81438256), (2, 40719128), (4, 20359564), (8, 10179782), (16, 5089891), (19, 4286224), (38, 2143112), (76, 1071556), (79, 1030864), (152, 535778), (158, 515432), (304, 267889), (316, 257716), (632, 128858), (1264, 64429), (1501, 54256), (3002, 27128), (3391, 24016), (6004, 13564), (6782, 12008)]