20898735

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{9743}}^1$

素因数の和:9775

約数の個数: 32

約数和(自身を含む): 39287808

約数和(自身を除く): 18389073

約数列:

[1, 3, 5, 11, 13, 15, 33, 39, 55, 65, 143, 165, 195, 429, 715, 2145, 9743, 29229, 48715, 107173, 126659, 146145, 321519, 379977, 535865, 633295, 1393249, 1607595, 1899885, 4179747, 6966245, 20898735]

約数ペア:

[(1, 20898735), (3, 6966245), (5, 4179747), (11, 1899885), (13, 1607595), (15, 1393249), (33, 633295), (39, 535865), (55, 379977), (65, 321519), (143, 146145), (165, 126659), (195, 107173), (429, 48715), (715, 29229), (2145, 9743)]