21076545

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{181}}^1\times {\mathrm{1109}}^1$

素因数の和:1305

約数の個数: 32

約数和(自身を含む): 38787840

約数和(自身を除く): 17711295

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 181, 543, 905, 1109, 1267, 2715, 3327, 3801, 5545, 6335, 7763, 16635, 19005, 23289, 38815, 116445, 200729, 602187, 1003645, 1405103, 3010935, 4215309, 7025515, 21076545]

約数ペア:

[(1, 21076545), (3, 7025515), (5, 4215309), (7, 3010935), (15, 1405103), (21, 1003645), (35, 602187), (105, 200729), (181, 116445), (543, 38815), (905, 23289), (1109, 19005), (1267, 16635), (2715, 7763), (3327, 6335), (3801, 5545)]