20138895

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{101}}^1\times {\mathrm{211}}^1$

素因数の和:333

約数の個数: 64

約数和(自身を含む): 41518080

約数和(自身を除く): 21379185

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 101, 105, 135, 189, 211, 303, 315, 505, 633, 707, 909, 945, 1055, 1477, 1515, 1899, 2121, 2727, 3165, 3535, 4431, 4545, 5697, 6363, 7385, 9495, 10605, 13293, 13635, 19089, 21311, 22155, 28485, 31815, 39879, 63933, 66465, 95445, 106555, 149177, 191799, 199395, 319665, 447531, 575397, 745885, 958995, 1342593, 2237655, 2876985, 4027779, 6712965, 20138895]

約数ペア:

[(1, 20138895), (3, 6712965), (5, 4027779), (7, 2876985), (9, 2237655), (15, 1342593), (21, 958995), (27, 745885), (35, 575397), (45, 447531), (63, 319665), (101, 199395), (105, 191799), (135, 149177), (189, 106555), (211, 95445), (303, 66465), (315, 63933), (505, 39879), (633, 31815), (707, 28485), (909, 22155), (945, 21311), (1055, 19089), (1477, 13635), (1515, 13293), (1899, 10605), (2121, 9495), (2727, 7385), (3165, 6363), (3535, 5697), (4431, 4545)]