20759895

素因数分解:

$3^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{3943}}^1$

素因数の和:3973

約数の個数: 40

約数和(自身を含む): 40086816

約数和(自身を除く): 19326921

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 45, 65, 81, 117, 135, 195, 351, 405, 585, 1053, 1755, 3943, 5265, 11829, 19715, 35487, 51259, 59145, 106461, 153777, 177435, 256295, 319383, 461331, 532305, 768885, 1383993, 1596915, 2306655, 4151979, 6919965, 20759895]

約数ペア:

[(1, 20759895), (3, 6919965), (5, 4151979), (9, 2306655), (13, 1596915), (15, 1383993), (27, 768885), (39, 532305), (45, 461331), (65, 319383), (81, 256295), (117, 177435), (135, 153777), (195, 106461), (351, 59145), (405, 51259), (585, 35487), (1053, 19715), (1755, 11829), (3943, 5265)]