64839280

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{73681}}^1$

素因数の和:73705

約数の個数: 40

約数和(自身を含む): 164458224

約数和(自身を除く): 99618944

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 73681, 147362, 294724, 368405, 589448, 736810, 810491, 1178896, 1473620, 1620982, 2947240, 3241964, 4052455, 5894480, 6483928, 8104910, 12967856, 16209820, 32419640, 64839280]

約数ペア:

[(1, 64839280), (2, 32419640), (4, 16209820), (5, 12967856), (8, 8104910), (10, 6483928), (11, 5894480), (16, 4052455), (20, 3241964), (22, 2947240), (40, 1620982), (44, 1473620), (55, 1178896), (80, 810491), (88, 736810), (110, 589448), (176, 368405), (220, 294724), (440, 147362), (880, 73681)]