64940740

素因数分解:

$2^2\times 5^1\times {\mathrm{137}}^2\times {\mathrm{173}}^1$

素因数の和:456

約数の個数: 36

約数和(自身を含む): 138172356

約数和(自身を除く): 73231616

約数列:

[1, 2, 4, 5, 10, 20, 137, 173, 274, 346, 548, 685, 692, 865, 1370, 1730, 2740, 3460, 18769, 23701, 37538, 47402, 75076, 93845, 94804, 118505, 187690, 237010, 375380, 474020, 3247037, 6494074, 12988148, 16235185, 32470370, 64940740]

約数ペア:

[(1, 64940740), (2, 32470370), (4, 16235185), (5, 12988148), (10, 6494074), (20, 3247037), (137, 474020), (173, 375380), (274, 237010), (346, 187690), (548, 118505), (685, 94804), (692, 93845), (865, 75076), (1370, 47402), (1730, 37538), (2740, 23701), (3460, 18769)]