20560735

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{809}}^1$

素因数の和:867

約数の個数: 32

約数和(自身を含む): 29393280

約数和(自身を除く): 8832545

約数列:

[1, 5, 13, 17, 23, 65, 85, 115, 221, 299, 391, 809, 1105, 1495, 1955, 4045, 5083, 10517, 13753, 18607, 25415, 52585, 68765, 93035, 178789, 241891, 316319, 893945, 1209455, 1581595, 4112147, 20560735]

約数ペア:

[(1, 20560735), (5, 4112147), (13, 1581595), (17, 1209455), (23, 893945), (65, 316319), (85, 241891), (115, 178789), (221, 93035), (299, 68765), (391, 52585), (809, 25415), (1105, 18607), (1495, 13753), (1955, 10517), (4045, 5083)]