20631115

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{173}}^1$

素因数の和:279

約数の個数: 32

約数和(自身を含む): 27962496

約数和(自身を除く): 7331381

約数列:

[1, 5, 17, 23, 61, 85, 115, 173, 305, 391, 865, 1037, 1403, 1955, 2941, 3979, 5185, 7015, 10553, 14705, 19895, 23851, 52765, 67643, 119255, 179401, 242719, 338215, 897005, 1213595, 4126223, 20631115]

約数ペア:

[(1, 20631115), (5, 4126223), (17, 1213595), (23, 897005), (61, 338215), (85, 242719), (115, 179401), (173, 119255), (305, 67643), (391, 52765), (865, 23851), (1037, 19895), (1403, 14705), (1955, 10553), (2941, 7015), (3979, 5185)]