20120779744

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{681229}}^1$

素因数の和:681323

約数の個数: 48

約数和(自身を含む): 43260829920

約数和(自身を除く): 23140050176

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 71, 104, 142, 208, 284, 416, 568, 923, 1136, 1846, 2272, 3692, 7384, 14768, 29536, 681229, 1362458, 2724916, 5449832, 8855977, 10899664, 17711954, 21799328, 35423908, 48367259, 70847816, 96734518, 141695632, 193469036, 283391264, 386938072, 628774367, 773876144, 1257548734, 1547752288, 2515097468, 5030194936, 10060389872, 20120779744]

約数ペア:

[(1, 20120779744), (2, 10060389872), (4, 5030194936), (8, 2515097468), (13, 1547752288), (16, 1257548734), (26, 773876144), (32, 628774367), (52, 386938072), (71, 283391264), (104, 193469036), (142, 141695632), (208, 96734518), (284, 70847816), (416, 48367259), (568, 35423908), (923, 21799328), (1136, 17711954), (1846, 10899664), (2272, 8855977), (3692, 5449832), (7384, 2724916), (14768, 1362458), (29536, 681229)]