18655880

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{6389}}^1$

素因数の和:6473

約数の個数: 32

約数和(自身を含む): 42557400

約数和(自身を除く): 23901520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460, 2920, 6389, 12778, 25556, 31945, 51112, 63890, 127780, 255560, 466397, 932794, 1865588, 2331985, 3731176, 4663970, 9327940, 18655880]

約数ペア:

[(1, 18655880), (2, 9327940), (4, 4663970), (5, 3731176), (8, 2331985), (10, 1865588), (20, 932794), (40, 466397), (73, 255560), (146, 127780), (292, 63890), (365, 51112), (584, 31945), (730, 25556), (1460, 12778), (2920, 6389)]