21659530

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{2963}}^1$

素因数の和:3030

約数の個数: 32

約数和(自身を含む): 42254784

約数和(自身を除く): 20595254

約数列:

[1, 2, 5, 10, 17, 34, 43, 85, 86, 170, 215, 430, 731, 1462, 2963, 3655, 5926, 7310, 14815, 29630, 50371, 100742, 127409, 251855, 254818, 503710, 637045, 1274090, 2165953, 4331906, 10829765, 21659530]

約数ペア:

[(1, 21659530), (2, 10829765), (5, 4331906), (10, 2165953), (17, 1274090), (34, 637045), (43, 503710), (85, 254818), (86, 251855), (170, 127409), (215, 100742), (430, 50371), (731, 29630), (1462, 14815), (2963, 7310), (3655, 5926)]