21751810

素因数分解:

$2^1\times 5^1\times {\mathrm{73}}^1\times {\mathrm{83}}^1\times {\mathrm{359}}^1$

素因数の和:522

約数の個数: 32

約数和(自身を含む): 40279680

約数和(自身を除く): 18527870

約数列:

[1, 2, 5, 10, 73, 83, 146, 166, 359, 365, 415, 718, 730, 830, 1795, 3590, 6059, 12118, 26207, 29797, 30295, 52414, 59594, 60590, 131035, 148985, 262070, 297970, 2175181, 4350362, 10875905, 21751810]

約数ペア:

[(1, 21751810), (2, 10875905), (5, 4350362), (10, 2175181), (73, 297970), (83, 262070), (146, 148985), (166, 131035), (359, 60590), (365, 59594), (415, 52414), (718, 30295), (730, 29797), (830, 26207), (1795, 12118), (3590, 6059)]