87191321

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{67}}^1\times {\mathrm{137}}^1$

素因数の和:293

約数の個数: 32

約数和(自身を含む): 108103680

約数和(自身を除く): 20912359

約数列:

[1, 7, 23, 59, 67, 137, 161, 413, 469, 959, 1357, 1541, 3151, 3953, 8083, 9179, 9499, 10787, 22057, 27671, 56581, 64253, 90919, 185909, 211117, 541561, 636433, 1301363, 1477819, 3790927, 12455903, 87191321]

約数ペア:

[(1, 87191321), (7, 12455903), (23, 3790927), (59, 1477819), (67, 1301363), (137, 636433), (161, 541561), (413, 211117), (469, 185909), (959, 90919), (1357, 64253), (1541, 56581), (3151, 27671), (3953, 22057), (8083, 10787), (9179, 9499)]