21624915

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{2579}}^1$

素因数の和:2643

約数の個数: 32

約数和(自身を含む): 38142720

約数和(自身を除く): 16517805

約数列:

[1, 3, 5, 13, 15, 39, 43, 65, 129, 195, 215, 559, 645, 1677, 2579, 2795, 7737, 8385, 12895, 33527, 38685, 100581, 110897, 167635, 332691, 502905, 554485, 1441661, 1663455, 4324983, 7208305, 21624915]

約数ペア:

[(1, 21624915), (3, 7208305), (5, 4324983), (13, 1663455), (15, 1441661), (39, 554485), (43, 502905), (65, 332691), (129, 167635), (195, 110897), (215, 100581), (559, 38685), (645, 33527), (1677, 12895), (2579, 8385), (2795, 7737)]