42940820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{317}}^1\times {\mathrm{521}}^1$

素因数の和:860

約数の個数: 48

約数和(自身を含む): 97605648

約数和(自身を除く): 54664828

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 317, 521, 634, 1042, 1268, 1585, 2084, 2605, 3170, 4121, 5210, 6340, 6773, 8242, 10420, 13546, 16484, 20605, 27092, 33865, 41210, 67730, 82420, 135460, 165157, 330314, 660628, 825785, 1651570, 2147041, 3303140, 4294082, 8588164, 10735205, 21470410, 42940820]

約数ペア:

[(1, 42940820), (2, 21470410), (4, 10735205), (5, 8588164), (10, 4294082), (13, 3303140), (20, 2147041), (26, 1651570), (52, 825785), (65, 660628), (130, 330314), (260, 165157), (317, 135460), (521, 82420), (634, 67730), (1042, 41210), (1268, 33865), (1585, 27092), (2084, 20605), (2605, 16484), (3170, 13546), (4121, 10420), (5210, 8242), (6340, 6773)]