21645507

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{409}}^1$

素因数の和:507

約数の個数: 32

約数和(自身を含む): 33062400

約数和(自身を除く): 11416893

約数列:

[1, 3, 13, 23, 39, 59, 69, 177, 299, 409, 767, 897, 1227, 1357, 2301, 4071, 5317, 9407, 15951, 17641, 24131, 28221, 52923, 72393, 122291, 313703, 366873, 555013, 941109, 1665039, 7215169, 21645507]

約数ペア:

[(1, 21645507), (3, 7215169), (13, 1665039), (23, 941109), (39, 555013), (59, 366873), (69, 313703), (177, 122291), (299, 72393), (409, 52923), (767, 28221), (897, 24131), (1227, 17641), (1357, 15951), (2301, 9407), (4071, 5317)]