21061250

素因数分解:

$2^1\times 5^4\times 7^1\times {\mathrm{29}}^1\times {\mathrm{83}}^1$

素因数の和:141

約数の個数: 80

約数和(自身を含む): 47234880

約数和(自身を除く): 26173630

約数列:

[1, 2, 5, 7, 10, 14, 25, 29, 35, 50, 58, 70, 83, 125, 145, 166, 175, 203, 250, 290, 350, 406, 415, 581, 625, 725, 830, 875, 1015, 1162, 1250, 1450, 1750, 2030, 2075, 2407, 2905, 3625, 4150, 4375, 4814, 5075, 5810, 7250, 8750, 10150, 10375, 12035, 14525, 16849, 18125, 20750, 24070, 25375, 29050, 33698, 36250, 50750, 51875, 60175, 72625, 84245, 103750, 120350, 126875, 145250, 168490, 253750, 300875, 363125, 421225, 601750, 726250, 842450, 1504375, 2106125, 3008750, 4212250, 10530625, 21061250]

約数ペア:

[(1, 21061250), (2, 10530625), (5, 4212250), (7, 3008750), (10, 2106125), (14, 1504375), (25, 842450), (29, 726250), (35, 601750), (50, 421225), (58, 363125), (70, 300875), (83, 253750), (125, 168490), (145, 145250), (166, 126875), (175, 120350), (203, 103750), (250, 84245), (290, 72625), (350, 60175), (406, 51875), (415, 50750), (581, 36250), (625, 33698), (725, 29050), (830, 25375), (875, 24070), (1015, 20750), (1162, 18125), (1250, 16849), (1450, 14525), (1750, 12035), (2030, 10375), (2075, 10150), (2407, 8750), (2905, 7250), (3625, 5810), (4150, 5075), (4375, 4814)]