20400135

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{59}}^1\times {\mathrm{89}}^1$

素因数の和:200

約数の個数: 64

約数和(自身を含む): 39398400

約数和(自身を除く): 18998265

約数列:

[1, 3, 5, 7, 15, 21, 35, 37, 59, 89, 105, 111, 177, 185, 259, 267, 295, 413, 445, 555, 623, 777, 885, 1239, 1295, 1335, 1869, 2065, 2183, 3115, 3293, 3885, 5251, 6195, 6549, 9345, 9879, 10915, 15281, 15753, 16465, 23051, 26255, 32745, 36757, 45843, 49395, 69153, 76405, 78765, 110271, 115255, 183785, 194287, 229215, 345765, 551355, 582861, 971435, 1360009, 2914305, 4080027, 6800045, 20400135]

約数ペア:

[(1, 20400135), (3, 6800045), (5, 4080027), (7, 2914305), (15, 1360009), (21, 971435), (35, 582861), (37, 551355), (59, 345765), (89, 229215), (105, 194287), (111, 183785), (177, 115255), (185, 110271), (259, 78765), (267, 76405), (295, 69153), (413, 49395), (445, 45843), (555, 36757), (623, 32745), (777, 26255), (885, 23051), (1239, 16465), (1295, 15753), (1335, 15281), (1869, 10915), (2065, 9879), (2183, 9345), (3115, 6549), (3293, 6195), (3885, 5251)]