20121754780

素因数分解:

$2^2\times 5^1\times {\mathrm{64217}}^1\times {\mathrm{15667}}^1$

素因数の和:79893

約数の個数: 24

約数和(自身を含む): 42259040208

約数和(自身を除く): 22137285428

約数列:

[1, 2, 4, 5, 10, 20, 15667, 31334, 62668, 64217, 78335, 128434, 156670, 256868, 313340, 321085, 642170, 1284340, 1006087739, 2012175478, 4024350956, 5030438695, 10060877390, 20121754780]

約数ペア:

[(1, 20121754780), (2, 10060877390), (4, 5030438695), (5, 4024350956), (10, 2012175478), (20, 1006087739), (15667, 1284340), (31334, 642170), (62668, 321085), (64217, 313340), (78335, 256868), (128434, 156670)]