20311921

素因数分解:

$7^2\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{269}}^1$

素因数の和:373

約数の個数: 24

約数和(自身を含む): 25116480

約数和(自身を除く): 4804559

約数列:

[1, 7, 23, 49, 67, 161, 269, 469, 1127, 1541, 1883, 3283, 6187, 10787, 13181, 18023, 43309, 75509, 126161, 303163, 414529, 883127, 2901703, 20311921]

約数ペア:

[(1, 20311921), (7, 2901703), (23, 883127), (49, 414529), (67, 303163), (161, 126161), (269, 75509), (469, 43309), (1127, 18023), (1541, 13181), (1883, 10787), (3283, 6187)]