71307280

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{81031}}^1$

素因数の和:81055

約数の個数: 40

約数和(自身を含む): 180863424

約数和(自身を除く): 109556144

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 81031, 162062, 324124, 405155, 648248, 810310, 891341, 1296496, 1620620, 1782682, 3241240, 3565364, 4456705, 6482480, 7130728, 8913410, 14261456, 17826820, 35653640, 71307280]

約数ペア:

[(1, 71307280), (2, 35653640), (4, 17826820), (5, 14261456), (8, 8913410), (10, 7130728), (11, 6482480), (16, 4456705), (20, 3565364), (22, 3241240), (40, 1782682), (44, 1620620), (55, 1296496), (80, 891341), (88, 810310), (110, 648248), (176, 405155), (220, 324124), (440, 162062), (880, 81031)]