20671365

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{419}}^1$

素因数の和:474

約数の個数: 64

約数和(自身を含む): 40642560

約数和(自身を除く): 19971195

約数列:

[1, 3, 5, 11, 13, 15, 23, 33, 39, 55, 65, 69, 115, 143, 165, 195, 253, 299, 345, 419, 429, 715, 759, 897, 1257, 1265, 1495, 2095, 2145, 3289, 3795, 4485, 4609, 5447, 6285, 9637, 9867, 13827, 16341, 16445, 23045, 27235, 28911, 48185, 49335, 59917, 69135, 81705, 106007, 125281, 144555, 179751, 299585, 318021, 375843, 530035, 626405, 898755, 1378091, 1590105, 1879215, 4134273, 6890455, 20671365]

約数ペア:

[(1, 20671365), (3, 6890455), (5, 4134273), (11, 1879215), (13, 1590105), (15, 1378091), (23, 898755), (33, 626405), (39, 530035), (55, 375843), (65, 318021), (69, 299585), (115, 179751), (143, 144555), (165, 125281), (195, 106007), (253, 81705), (299, 69135), (345, 59917), (419, 49335), (429, 48185), (715, 28911), (759, 27235), (897, 23045), (1257, 16445), (1265, 16341), (1495, 13827), (2095, 9867), (2145, 9637), (3289, 6285), (3795, 5447), (4485, 4609)]