21551127

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{181}}^1$

素因数の和:311

約数の個数: 32

約数和(自身を含む): 32288256

約数和(自身を除く): 10737129

約数列:

[1, 3, 13, 39, 43, 71, 129, 181, 213, 543, 559, 923, 1677, 2353, 2769, 3053, 7059, 7783, 9159, 12851, 23349, 38553, 39689, 101179, 119067, 167063, 303537, 501189, 552593, 1657779, 7183709, 21551127]

約数ペア:

[(1, 21551127), (3, 7183709), (13, 1657779), (39, 552593), (43, 501189), (71, 303537), (129, 167063), (181, 119067), (213, 101179), (543, 39689), (559, 38553), (923, 23349), (1677, 12851), (2353, 9159), (2769, 7783), (3053, 7059)]