20864115

素因数分解:

$3^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{4177}}^1$

素因数の和:4228

約数の個数: 32

約数和(自身を含む): 38103360

約数和(自身を除く): 17239245

約数列:

[1, 3, 5, 9, 15, 27, 37, 45, 111, 135, 185, 333, 555, 999, 1665, 4177, 4995, 12531, 20885, 37593, 62655, 112779, 154549, 187965, 463647, 563895, 772745, 1390941, 2318235, 4172823, 6954705, 20864115]

約数ペア:

[(1, 20864115), (3, 6954705), (5, 4172823), (9, 2318235), (15, 1390941), (27, 772745), (37, 563895), (45, 463647), (111, 187965), (135, 154549), (185, 112779), (333, 62655), (555, 37593), (999, 20885), (1665, 12531), (4177, 4995)]