21850785

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{4013}}^1$

素因数の和:4046

約数の個数: 36

約数和(自身を含む): 41641236

約数和(自身を除く): 19790451

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 99, 121, 165, 363, 495, 605, 1089, 1815, 4013, 5445, 12039, 20065, 36117, 44143, 60195, 132429, 180585, 220715, 397287, 485573, 662145, 1456719, 1986435, 2427865, 4370157, 7283595, 21850785]

約数ペア:

[(1, 21850785), (3, 7283595), (5, 4370157), (9, 2427865), (11, 1986435), (15, 1456719), (33, 662145), (45, 485573), (55, 397287), (99, 220715), (121, 180585), (165, 132429), (363, 60195), (495, 44143), (605, 36117), (1089, 20065), (1815, 12039), (4013, 5445)]