19718960

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{12973}}^1$

素因数の和:13005

約数の個数: 40

約数和(自身を含む): 48263280

約数和(自身を除く): 28544320

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 12973, 25946, 51892, 64865, 103784, 129730, 207568, 246487, 259460, 492974, 518920, 985948, 1037840, 1232435, 1971896, 2464870, 3943792, 4929740, 9859480, 19718960]

約数ペア:

[(1, 19718960), (2, 9859480), (4, 4929740), (5, 3943792), (8, 2464870), (10, 1971896), (16, 1232435), (19, 1037840), (20, 985948), (38, 518920), (40, 492974), (76, 259460), (80, 246487), (95, 207568), (152, 129730), (190, 103784), (304, 64865), (380, 51892), (760, 25946), (1520, 12973)]