20189720

素因数分解:

$2^3\times 5^1\times {\mathrm{131}}^1\times {\mathrm{3853}}^1$

素因数の和:3995

約数の個数: 32

約数和(自身を含む): 45785520

約数和(自身を除く): 25595800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 131, 262, 524, 655, 1048, 1310, 2620, 3853, 5240, 7706, 15412, 19265, 30824, 38530, 77060, 154120, 504743, 1009486, 2018972, 2523715, 4037944, 5047430, 10094860, 20189720]

約数ペア:

[(1, 20189720), (2, 10094860), (4, 5047430), (5, 4037944), (8, 2523715), (10, 2018972), (20, 1009486), (40, 504743), (131, 154120), (262, 77060), (524, 38530), (655, 30824), (1048, 19265), (1310, 15412), (2620, 7706), (3853, 5240)]