72163240

素因数分解:

$2^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{12979}}^1$

素因数の和:13129

約数の個数: 32

約数和(自身を含む): 163548000

約数和(自身を除く): 91384760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 139, 278, 556, 695, 1112, 1390, 2780, 5560, 12979, 25958, 51916, 64895, 103832, 129790, 259580, 519160, 1804081, 3608162, 7216324, 9020405, 14432648, 18040810, 36081620, 72163240]

約数ペア:

[(1, 72163240), (2, 36081620), (4, 18040810), (5, 14432648), (8, 9020405), (10, 7216324), (20, 3608162), (40, 1804081), (139, 519160), (278, 259580), (556, 129790), (695, 103832), (1112, 64895), (1390, 51916), (2780, 25958), (5560, 12979)]