28291880

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{9689}}^1$

素因数の和:9773

約数の個数: 32

約数和(自身を含む): 64535400

約数和(自身を除く): 36243520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460, 2920, 9689, 19378, 38756, 48445, 77512, 96890, 193780, 387560, 707297, 1414594, 2829188, 3536485, 5658376, 7072970, 14145940, 28291880]

約数ペア:

[(1, 28291880), (2, 14145940), (4, 7072970), (5, 5658376), (8, 3536485), (10, 2829188), (20, 1414594), (40, 707297), (73, 387560), (146, 193780), (292, 96890), (365, 77512), (584, 48445), (730, 38756), (1460, 19378), (2920, 9689)]