71245240

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{161921}}^1$

素因数の和:161943

約数の個数: 32

約数和(自身を含む): 174875760

約数和(自身を除く): 103630520

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 161921, 323842, 647684, 809605, 1295368, 1619210, 1781131, 3238420, 3562262, 6476840, 7124524, 8905655, 14249048, 17811310, 35622620, 71245240]

約数ペア:

[(1, 71245240), (2, 35622620), (4, 17811310), (5, 14249048), (8, 8905655), (10, 7124524), (11, 6476840), (20, 3562262), (22, 3238420), (40, 1781131), (44, 1619210), (55, 1295368), (88, 809605), (110, 647684), (220, 323842), (440, 161921)]