20787735

素因数分解:

$3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{131}}^1\times {\mathrm{149}}^1$

素因数の和:359

約数の個数: 32

約数和(自身を含む): 34214400

約数和(自身を除く): 13426665

約数列:

[1, 3, 5, 15, 71, 131, 149, 213, 355, 393, 447, 655, 745, 1065, 1965, 2235, 9301, 10579, 19519, 27903, 31737, 46505, 52895, 58557, 97595, 139515, 158685, 292785, 1385849, 4157547, 6929245, 20787735]

約数ペア:

[(1, 20787735), (3, 6929245), (5, 4157547), (15, 1385849), (71, 292785), (131, 158685), (149, 139515), (213, 97595), (355, 58557), (393, 52895), (447, 46505), (655, 31737), (745, 27903), (1065, 19519), (1965, 10579), (2235, 9301)]