20440755

素因数分解:

$3^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{1231}}^1$

素因数の和:1289

約数の個数: 40

約数和(自身を含む): 37566144

約数和(自身を除く): 17125389

約数列:

[1, 3, 5, 9, 15, 27, 41, 45, 81, 123, 135, 205, 369, 405, 615, 1107, 1231, 1845, 3321, 3693, 5535, 6155, 11079, 16605, 18465, 33237, 50471, 55395, 99711, 151413, 166185, 252355, 454239, 498555, 757065, 1362717, 2271195, 4088151, 6813585, 20440755]

約数ペア:

[(1, 20440755), (3, 6813585), (5, 4088151), (9, 2271195), (15, 1362717), (27, 757065), (41, 498555), (45, 454239), (81, 252355), (123, 166185), (135, 151413), (205, 99711), (369, 55395), (405, 50471), (615, 33237), (1107, 18465), (1231, 16605), (1845, 11079), (3321, 6155), (3693, 5535)]