21400574

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{43321}}^1$

素因数の和:43355

約数の個数: 16

約数和(自身を含む): 36390480

約数和(自身を除く): 14989906

約数列:

[1, 2, 13, 19, 26, 38, 247, 494, 43321, 86642, 563173, 823099, 1126346, 1646198, 10700287, 21400574]

約数ペア:

[(1, 21400574), (2, 10700287), (13, 1646198), (19, 1126346), (26, 823099), (38, 563173), (247, 86642), (494, 43321)]