21309171

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{83}}^1\times {\mathrm{227}}^1$

素因数の和:355

約数の個数: 32

約数和(自身を含む): 32175360

約数和(自身を除く): 10866189

約数列:

[1, 3, 13, 29, 39, 83, 87, 227, 249, 377, 681, 1079, 1131, 2407, 2951, 3237, 6583, 7221, 8853, 18841, 19749, 31291, 56523, 85579, 93873, 244933, 256737, 546389, 734799, 1639167, 7103057, 21309171]

約数ペア:

[(1, 21309171), (3, 7103057), (13, 1639167), (29, 734799), (39, 546389), (83, 256737), (87, 244933), (227, 93873), (249, 85579), (377, 56523), (681, 31291), (1079, 19749), (1131, 18841), (2407, 8853), (2951, 7221), (3237, 6583)]