20691825

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{3583}}^1$

素因数の和:3614

約数の個数: 48

約数和(自身を含む): 42663936

約数和(自身を除く): 21972111

約数列:

[1, 3, 5, 7, 11, 15, 21, 25, 33, 35, 55, 75, 77, 105, 165, 175, 231, 275, 385, 525, 825, 1155, 1925, 3583, 5775, 10749, 17915, 25081, 39413, 53745, 75243, 89575, 118239, 125405, 197065, 268725, 275891, 376215, 591195, 627025, 827673, 985325, 1379455, 1881075, 2955975, 4138365, 6897275, 20691825]

約数ペア:

[(1, 20691825), (3, 6897275), (5, 4138365), (7, 2955975), (11, 1881075), (15, 1379455), (21, 985325), (25, 827673), (33, 627025), (35, 591195), (55, 376215), (75, 275891), (77, 268725), (105, 197065), (165, 125405), (175, 118239), (231, 89575), (275, 75243), (385, 53745), (525, 39413), (825, 25081), (1155, 17915), (1925, 10749), (3583, 5775)]