21004845

素因数分解:

$3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{109}}^1\times {\mathrm{443}}^1$

素因数の和:589

約数の個数: 32

約数和(自身を含む): 35164800

約数和(自身を除く): 14159955

約数列:

[1, 3, 5, 15, 29, 87, 109, 145, 327, 435, 443, 545, 1329, 1635, 2215, 3161, 6645, 9483, 12847, 15805, 38541, 47415, 48287, 64235, 144861, 192705, 241435, 724305, 1400323, 4200969, 7001615, 21004845]

約数ペア:

[(1, 21004845), (3, 7001615), (5, 4200969), (15, 1400323), (29, 724305), (87, 241435), (109, 192705), (145, 144861), (327, 64235), (435, 48287), (443, 47415), (545, 38541), (1329, 15805), (1635, 12847), (2215, 9483), (3161, 6645)]