128078980

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{167}}^1\times {\mathrm{1237}}^1$

素因数の和:1444

約数の個数: 48

約数和(自身を含む): 279530496

約数和(自身を除く): 151451516

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 167, 310, 334, 620, 668, 835, 1237, 1670, 2474, 3340, 4948, 5177, 6185, 10354, 12370, 20708, 24740, 25885, 38347, 51770, 76694, 103540, 153388, 191735, 206579, 383470, 413158, 766940, 826316, 1032895, 2065790, 4131580, 6403949, 12807898, 25615796, 32019745, 64039490, 128078980]

約数ペア:

[(1, 128078980), (2, 64039490), (4, 32019745), (5, 25615796), (10, 12807898), (20, 6403949), (31, 4131580), (62, 2065790), (124, 1032895), (155, 826316), (167, 766940), (310, 413158), (334, 383470), (620, 206579), (668, 191735), (835, 153388), (1237, 103540), (1670, 76694), (2474, 51770), (3340, 38347), (4948, 25885), (5177, 24740), (6185, 20708), (10354, 12370)]