20399350

素因数分解:

$2^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{197}}^1$

素因数の和:337

約数の個数: 48

約数和(自身を含む): 40510800

約数和(自身を除く): 20111450

約数列:

[1, 2, 5, 10, 19, 25, 38, 50, 95, 109, 190, 197, 218, 394, 475, 545, 950, 985, 1090, 1970, 2071, 2725, 3743, 4142, 4925, 5450, 7486, 9850, 10355, 18715, 20710, 21473, 37430, 42946, 51775, 93575, 103550, 107365, 187150, 214730, 407987, 536825, 815974, 1073650, 2039935, 4079870, 10199675, 20399350]

約数ペア:

[(1, 20399350), (2, 10199675), (5, 4079870), (10, 2039935), (19, 1073650), (25, 815974), (38, 536825), (50, 407987), (95, 214730), (109, 187150), (190, 107365), (197, 103550), (218, 93575), (394, 51775), (475, 42946), (545, 37430), (950, 21473), (985, 20710), (1090, 18715), (1970, 10355), (2071, 9850), (2725, 7486), (3743, 5450), (4142, 4925)]