19645630

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{127}}^1\times {\mathrm{499}}^1$

素因数の和:664

約数の個数: 32

約数和(自身を含む): 36864000

約数和(自身を除く): 17218370

約数列:

[1, 2, 5, 10, 31, 62, 127, 155, 254, 310, 499, 635, 998, 1270, 2495, 3937, 4990, 7874, 15469, 19685, 30938, 39370, 63373, 77345, 126746, 154690, 316865, 633730, 1964563, 3929126, 9822815, 19645630]

約数ペア:

[(1, 19645630), (2, 9822815), (5, 3929126), (10, 1964563), (31, 633730), (62, 316865), (127, 154690), (155, 126746), (254, 77345), (310, 63373), (499, 39370), (635, 30938), (998, 19685), (1270, 15469), (2495, 7874), (3937, 4990)]