21258390

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{631}}^1\times {\mathrm{1123}}^1$

素因数の和:1764

約数の個数: 32

約数和(自身を含む): 51146496

約数和(自身を除く): 29888106

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 631, 1123, 1262, 1893, 2246, 3155, 3369, 3786, 5615, 6310, 6738, 9465, 11230, 16845, 18930, 33690, 708613, 1417226, 2125839, 3543065, 4251678, 7086130, 10629195, 21258390]

約数ペア:

[(1, 21258390), (2, 10629195), (3, 7086130), (5, 4251678), (6, 3543065), (10, 2125839), (15, 1417226), (30, 708613), (631, 33690), (1123, 18930), (1262, 16845), (1893, 11230), (2246, 9465), (3155, 6738), (3369, 6310), (3786, 5615)]