17940680

素因数分解:

$2^3\times 5^1\times {\mathrm{389}}^1\times {\mathrm{1153}}^1$

素因数の和:1553

約数の個数: 32

約数和(自身を含む): 40505400

約数和(自身を除く): 22564720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 389, 778, 1153, 1556, 1945, 2306, 3112, 3890, 4612, 5765, 7780, 9224, 11530, 15560, 23060, 46120, 448517, 897034, 1794068, 2242585, 3588136, 4485170, 8970340, 17940680]

約数ペア:

[(1, 17940680), (2, 8970340), (4, 4485170), (5, 3588136), (8, 2242585), (10, 1794068), (20, 897034), (40, 448517), (389, 46120), (778, 23060), (1153, 15560), (1556, 11530), (1945, 9224), (2306, 7780), (3112, 5765), (3890, 4612)]