21387570

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{613}}^1\times {\mathrm{1163}}^1$

素因数の和:1786

約数の個数: 32

約数和(自身を含む): 51458112

約数和(自身を除く): 30070542

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 613, 1163, 1226, 1839, 2326, 3065, 3489, 3678, 5815, 6130, 6978, 9195, 11630, 17445, 18390, 34890, 712919, 1425838, 2138757, 3564595, 4277514, 7129190, 10693785, 21387570]

約数ペア:

[(1, 21387570), (2, 10693785), (3, 7129190), (5, 4277514), (6, 3564595), (10, 2138757), (15, 1425838), (30, 712919), (613, 34890), (1163, 18390), (1226, 17445), (1839, 11630), (2326, 9195), (3065, 6978), (3489, 6130), (3678, 5815)]