21749585

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1601}}^1$

素因数の和:1649

約数の個数: 32

約数和(自身を含む): 32296320

約数和(自身を除く): 10546735

約数列:

[1, 5, 11, 13, 19, 55, 65, 95, 143, 209, 247, 715, 1045, 1235, 1601, 2717, 8005, 13585, 17611, 20813, 30419, 88055, 104065, 152095, 228943, 334609, 395447, 1144715, 1673045, 1977235, 4349917, 21749585]

約数ペア:

[(1, 21749585), (5, 4349917), (11, 1977235), (13, 1673045), (19, 1144715), (55, 395447), (65, 334609), (95, 228943), (143, 152095), (209, 104065), (247, 88055), (715, 30419), (1045, 20813), (1235, 17611), (1601, 13585), (2717, 8005)]