19665040

素因数分解:

$2^4\times 5^1\times {\mathrm{401}}^1\times {\mathrm{613}}^1$

素因数の和:1027

約数の個数: 40

約数和(自身を含む): 45910008

約数和(自身を除く): 26244968

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 401, 613, 802, 1226, 1604, 2005, 2452, 3065, 3208, 4010, 4904, 6130, 6416, 8020, 9808, 12260, 16040, 24520, 32080, 49040, 245813, 491626, 983252, 1229065, 1966504, 2458130, 3933008, 4916260, 9832520, 19665040]

約数ペア:

[(1, 19665040), (2, 9832520), (4, 4916260), (5, 3933008), (8, 2458130), (10, 1966504), (16, 1229065), (20, 983252), (40, 491626), (80, 245813), (401, 49040), (613, 32080), (802, 24520), (1226, 16040), (1604, 12260), (2005, 9808), (2452, 8020), (3065, 6416), (3208, 6130), (4010, 4904)]