20431270

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{191}}^1\times {\mathrm{563}}^1$

素因数の和:780

約数の個数: 32

約数和(自身を含む): 38983680

約数和(自身を除く): 18552410

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 191, 382, 563, 955, 1126, 1910, 2815, 3629, 5630, 7258, 10697, 18145, 21394, 36290, 53485, 106970, 107533, 215066, 537665, 1075330, 2043127, 4086254, 10215635, 20431270]

約数ペア:

[(1, 20431270), (2, 10215635), (5, 4086254), (10, 2043127), (19, 1075330), (38, 537665), (95, 215066), (190, 107533), (191, 106970), (382, 53485), (563, 36290), (955, 21394), (1126, 18145), (1910, 10697), (2815, 7258), (3629, 5630)]