18933747

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{6779}}^1$

素因数の和:6815

約数の個数: 24

約数和(自身を含む): 30916800

約数和(自身を除く): 11983053

約数列:

[1, 3, 7, 19, 21, 49, 57, 133, 147, 399, 931, 2793, 6779, 20337, 47453, 128801, 142359, 332171, 386403, 901607, 996513, 2704821, 6311249, 18933747]

約数ペア:

[(1, 18933747), (3, 6311249), (7, 2704821), (19, 996513), (21, 901607), (49, 386403), (57, 332171), (133, 142359), (147, 128801), (399, 47453), (931, 20337), (2793, 6779)]