21776205

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{271}}^1\times {\mathrm{487}}^1$

素因数の和:777

約数の個数: 32

約数和(自身を含む): 38227968

約数和(自身を除く): 16451763

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 271, 487, 813, 1355, 1461, 2435, 2981, 4065, 5357, 7305, 8943, 14905, 16071, 26785, 44715, 80355, 131977, 395931, 659885, 1451747, 1979655, 4355241, 7258735, 21776205]

約数ペア:

[(1, 21776205), (3, 7258735), (5, 4355241), (11, 1979655), (15, 1451747), (33, 659885), (55, 395931), (165, 131977), (271, 80355), (487, 44715), (813, 26785), (1355, 16071), (1461, 14905), (2435, 8943), (2981, 7305), (4065, 5357)]