21380685

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{2137}}^1$

素因数の和:2197

約数の個数: 32

約数和(自身を含む): 36944640

約数和(自身を除く): 15563955

約数列:

[1, 3, 5, 15, 23, 29, 69, 87, 115, 145, 345, 435, 667, 2001, 2137, 3335, 6411, 10005, 10685, 32055, 49151, 61973, 147453, 185919, 245755, 309865, 737265, 929595, 1425379, 4276137, 7126895, 21380685]

約数ペア:

[(1, 21380685), (3, 7126895), (5, 4276137), (15, 1425379), (23, 929595), (29, 737265), (69, 309865), (87, 245755), (115, 185919), (145, 147453), (345, 61973), (435, 49151), (667, 32055), (2001, 10685), (2137, 10005), (3335, 6411)]