20854181740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{4805111}}^1$

素因数の和:4805158

約数の個数: 48

約数和(自身を含む): 51664564224

約数和(自身を除く): 30810382484

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 62, 70, 124, 140, 155, 217, 310, 434, 620, 868, 1085, 2170, 4340, 4805111, 9610222, 19220444, 24025555, 33635777, 48051110, 67271554, 96102220, 134543108, 148958441, 168178885, 297916882, 336357770, 595833764, 672715540, 744792205, 1042709087, 1489584410, 2085418174, 2979168820, 4170836348, 5213545435, 10427090870, 20854181740]

約数ペア:

[(1, 20854181740), (2, 10427090870), (4, 5213545435), (5, 4170836348), (7, 2979168820), (10, 2085418174), (14, 1489584410), (20, 1042709087), (28, 744792205), (31, 672715540), (35, 595833764), (62, 336357770), (70, 297916882), (124, 168178885), (140, 148958441), (155, 134543108), (217, 96102220), (310, 67271554), (434, 48051110), (620, 33635777), (868, 24025555), (1085, 19220444), (2170, 9610222), (4340, 4805111)]