21580185

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{4219}}^1$

素因数の和:4269

約数の個数: 32

約数和(自身を含む): 38891520

約数和(自身を除く): 17311335

約数列:

[1, 3, 5, 11, 15, 31, 33, 55, 93, 155, 165, 341, 465, 1023, 1705, 4219, 5115, 12657, 21095, 46409, 63285, 130789, 139227, 232045, 392367, 653945, 696135, 1438679, 1961835, 4316037, 7193395, 21580185]

約数ペア:

[(1, 21580185), (3, 7193395), (5, 4316037), (11, 1961835), (15, 1438679), (31, 696135), (33, 653945), (55, 392367), (93, 232045), (155, 139227), (165, 130789), (341, 63285), (465, 46409), (1023, 21095), (1705, 12657), (4219, 5115)]