18778370

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{293}}^1$

素因数の和:359

約数の個数: 64

約数和(自身を含む): 40007520

約数和(自身を除く): 21229150

約数列:

[1, 2, 5, 10, 13, 17, 26, 29, 34, 58, 65, 85, 130, 145, 170, 221, 290, 293, 377, 442, 493, 586, 754, 986, 1105, 1465, 1885, 2210, 2465, 2930, 3770, 3809, 4930, 4981, 6409, 7618, 8497, 9962, 12818, 16994, 19045, 24905, 32045, 38090, 42485, 49810, 64090, 64753, 84970, 110461, 129506, 144449, 220922, 288898, 323765, 552305, 647530, 722245, 1104610, 1444490, 1877837, 3755674, 9389185, 18778370]

約数ペア:

[(1, 18778370), (2, 9389185), (5, 3755674), (10, 1877837), (13, 1444490), (17, 1104610), (26, 722245), (29, 647530), (34, 552305), (58, 323765), (65, 288898), (85, 220922), (130, 144449), (145, 129506), (170, 110461), (221, 84970), (290, 64753), (293, 64090), (377, 49810), (442, 42485), (493, 38090), (586, 32045), (754, 24905), (986, 19045), (1105, 16994), (1465, 12818), (1885, 9962), (2210, 8497), (2465, 7618), (2930, 6409), (3770, 4981), (3809, 4930)]