21305625

素因数分解:

$3^1\times 5^4\times {\mathrm{11}}^1\times {\mathrm{1033}}^1$

素因数の和:1067

約数の個数: 40

約数和(自身を含む): 38762592

約数和(自身を除く): 17456967

約数列:

[1, 3, 5, 11, 15, 25, 33, 55, 75, 125, 165, 275, 375, 625, 825, 1033, 1375, 1875, 3099, 4125, 5165, 6875, 11363, 15495, 20625, 25825, 34089, 56815, 77475, 129125, 170445, 284075, 387375, 645625, 852225, 1420375, 1936875, 4261125, 7101875, 21305625]

約数ペア:

[(1, 21305625), (3, 7101875), (5, 4261125), (11, 1936875), (15, 1420375), (25, 852225), (33, 645625), (55, 387375), (75, 284075), (125, 170445), (165, 129125), (275, 77475), (375, 56815), (625, 34089), (825, 25825), (1033, 20625), (1375, 15495), (1875, 11363), (3099, 6875), (4125, 5165)]