1978280

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^2\times {\mathrm{137}}^1$

素因数の和:186

約数の個数: 48

約数和(自身を含む): 4732020

約数和(自身を除く): 2753740

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 137, 152, 190, 274, 361, 380, 548, 685, 722, 760, 1096, 1370, 1444, 1805, 2603, 2740, 2888, 3610, 5206, 5480, 7220, 10412, 13015, 14440, 20824, 26030, 49457, 52060, 98914, 104120, 197828, 247285, 395656, 494570, 989140, 1978280]

約数ペア:

[(1, 1978280), (2, 989140), (4, 494570), (5, 395656), (8, 247285), (10, 197828), (19, 104120), (20, 98914), (38, 52060), (40, 49457), (76, 26030), (95, 20824), (137, 14440), (152, 13015), (190, 10412), (274, 7220), (361, 5480), (380, 5206), (548, 3610), (685, 2888), (722, 2740), (760, 2603), (1096, 1805), (1370, 1444)]