20002801

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{503}}^1$

素因数の和:565

約数の個数: 32

約数和(自身を含む): 27095040

約数和(自身を除く): 7092239

約数列:

[1, 7, 13, 19, 23, 91, 133, 161, 247, 299, 437, 503, 1729, 2093, 3059, 3521, 5681, 6539, 9557, 11569, 39767, 45773, 66899, 80983, 124241, 150397, 219811, 869687, 1052779, 1538677, 2857543, 20002801]

約数ペア:

[(1, 20002801), (7, 2857543), (13, 1538677), (19, 1052779), (23, 869687), (91, 219811), (133, 150397), (161, 124241), (247, 80983), (299, 66899), (437, 45773), (503, 39767), (1729, 11569), (2093, 9557), (3059, 6539), (3521, 5681)]