21530535

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{2693}}^1$

素因数の和:2755

約数の個数: 32

約数和(自身を含む): 38017728

約数和(自身を除く): 16487193

約数列:

[1, 3, 5, 13, 15, 39, 41, 65, 123, 195, 205, 533, 615, 1599, 2665, 2693, 7995, 8079, 13465, 35009, 40395, 105027, 110413, 175045, 331239, 525135, 552065, 1435369, 1656195, 4306107, 7176845, 21530535]

約数ペア:

[(1, 21530535), (3, 7176845), (5, 4306107), (13, 1656195), (15, 1435369), (39, 552065), (41, 525135), (65, 331239), (123, 175045), (195, 110413), (205, 105027), (533, 40395), (615, 35009), (1599, 13465), (2665, 8079), (2693, 7995)]