20005978475

素因数分解:

$5^2\times 7^2\times {\mathrm{89}}^1\times {\mathrm{183499}}^1$

素因数の和:183612

約数の個数: 36

約数和(自身を含む): 29182005000

約数和(自身を除く): 9176026525

約数列:

[1, 5, 7, 25, 35, 49, 89, 175, 245, 445, 623, 1225, 2225, 3115, 4361, 15575, 21805, 109025, 183499, 917495, 1284493, 4587475, 6422465, 8991451, 16331411, 32112325, 44957255, 81657055, 114319877, 224786275, 408285275, 571599385, 800239139, 2857996925, 4001195695, 20005978475]

約数ペア:

[(1, 20005978475), (5, 4001195695), (7, 2857996925), (25, 800239139), (35, 571599385), (49, 408285275), (89, 224786275), (175, 114319877), (245, 81657055), (445, 44957255), (623, 32112325), (1225, 16331411), (2225, 8991451), (3115, 6422465), (4361, 4587475), (15575, 1284493), (21805, 917495), (109025, 183499)]