20439725

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{1163}}^1$

素因数の和:1229

約数の個数: 24

約数和(自身を含む): 27423840

約数和(自身を除く): 6984115

約数列:

[1, 5, 19, 25, 37, 95, 185, 475, 703, 925, 1163, 3515, 5815, 17575, 22097, 29075, 43031, 110485, 215155, 552425, 817589, 1075775, 4087945, 20439725]

約数ペア:

[(1, 20439725), (5, 4087945), (19, 1075775), (25, 817589), (37, 552425), (95, 215155), (185, 110485), (475, 43031), (703, 29075), (925, 22097), (1163, 17575), (3515, 5815)]