21065415

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{439}}^1\times {\mathrm{457}}^1$

素因数の和:911

約数の個数: 32

約数和(自身を含む): 38691840

約数和(自身を除く): 17626425

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 439, 457, 1317, 1371, 2195, 2285, 3073, 3199, 6585, 6855, 9219, 9597, 15365, 15995, 46095, 47985, 200623, 601869, 1003115, 1404361, 3009345, 4213083, 7021805, 21065415]

約数ペア:

[(1, 21065415), (3, 7021805), (5, 4213083), (7, 3009345), (15, 1404361), (21, 1003115), (35, 601869), (105, 200623), (439, 47985), (457, 46095), (1317, 15995), (1371, 15365), (2195, 9597), (2285, 9219), (3073, 6855), (3199, 6585)]