20277370

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^2\times {\mathrm{41}}^1\times {\mathrm{137}}^1$

素因数の和:223

約数の個数: 48

約数和(自身を含む): 39748968

約数和(自身を除く): 19471598

約数列:

[1, 2, 5, 10, 19, 38, 41, 82, 95, 137, 190, 205, 274, 361, 410, 685, 722, 779, 1370, 1558, 1805, 2603, 3610, 3895, 5206, 5617, 7790, 11234, 13015, 14801, 26030, 28085, 29602, 49457, 56170, 74005, 98914, 106723, 148010, 213446, 247285, 494570, 533615, 1067230, 2027737, 4055474, 10138685, 20277370]

約数ペア:

[(1, 20277370), (2, 10138685), (5, 4055474), (10, 2027737), (19, 1067230), (38, 533615), (41, 494570), (82, 247285), (95, 213446), (137, 148010), (190, 106723), (205, 98914), (274, 74005), (361, 56170), (410, 49457), (685, 29602), (722, 28085), (779, 26030), (1370, 14801), (1558, 13015), (1805, 11234), (2603, 7790), (3610, 5617), (3895, 5206)]