21477561

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{839}}^1$

素因数の和:925

約数の個数: 32

約数和(自身を含む): 34836480

約数和(自身を除く): 13358919

約数列:

[1, 3, 7, 21, 23, 53, 69, 159, 161, 371, 483, 839, 1113, 1219, 2517, 3657, 5873, 8533, 17619, 19297, 25599, 44467, 57891, 133401, 135079, 311269, 405237, 933807, 1022741, 3068223, 7159187, 21477561]

約数ペア:

[(1, 21477561), (3, 7159187), (7, 3068223), (21, 1022741), (23, 933807), (53, 405237), (69, 311269), (159, 135079), (161, 133401), (371, 57891), (483, 44467), (839, 25599), (1113, 19297), (1219, 17619), (2517, 8533), (3657, 5873)]