72145240

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{43991}}^1$

素因数の和:44043

約数の個数: 32

約数和(自身を含む): 166289760

約数和(自身を除く): 94144520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 43991, 87982, 175964, 219955, 351928, 439910, 879820, 1759640, 1803631, 3607262, 7214524, 9018155, 14429048, 18036310, 36072620, 72145240]

約数ペア:

[(1, 72145240), (2, 36072620), (4, 18036310), (5, 14429048), (8, 9018155), (10, 7214524), (20, 3607262), (40, 1803631), (41, 1759640), (82, 879820), (164, 439910), (205, 351928), (328, 219955), (410, 175964), (820, 87982), (1640, 43991)]