201831980

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{205951}}^1$

素因数の和:205974

約数の個数: 36

約数和(自身を含む): 493049088

約数和(自身を除く): 291217108

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 205951, 411902, 823804, 1029755, 1441657, 2059510, 2883314, 4119020, 5766628, 7208285, 10091599, 14416570, 20183198, 28833140, 40366396, 50457995, 100915990, 201831980]

約数ペア:

[(1, 201831980), (2, 100915990), (4, 50457995), (5, 40366396), (7, 28833140), (10, 20183198), (14, 14416570), (20, 10091599), (28, 7208285), (35, 5766628), (49, 4119020), (70, 2883314), (98, 2059510), (140, 1441657), (196, 1029755), (245, 823804), (490, 411902), (980, 205951)]