21850605

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{977}}^1$

素因数の和:1066

約数の個数: 48

約数和(自身を含む): 43939584

約数和(自身を除く): 22088979

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 71, 105, 213, 315, 355, 497, 639, 977, 1065, 1491, 2485, 2931, 3195, 4473, 4885, 6839, 7455, 8793, 14655, 20517, 22365, 34195, 43965, 61551, 69367, 102585, 208101, 307755, 346835, 485569, 624303, 1040505, 1456707, 2427845, 3121515, 4370121, 7283535, 21850605]

約数ペア:

[(1, 21850605), (3, 7283535), (5, 4370121), (7, 3121515), (9, 2427845), (15, 1456707), (21, 1040505), (35, 624303), (45, 485569), (63, 346835), (71, 307755), (105, 208101), (213, 102585), (315, 69367), (355, 61551), (497, 43965), (639, 34195), (977, 22365), (1065, 20517), (1491, 14655), (2485, 8793), (2931, 7455), (3195, 6839), (4473, 4885)]