20040475

素因数分解:

$5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{383}}^1$

素因数の和:436

約数の個数: 48

約数和(自身を含む): 31997952

約数和(自身を除く): 11957477

約数列:

[1, 5, 7, 13, 23, 25, 35, 65, 91, 115, 161, 175, 299, 325, 383, 455, 575, 805, 1495, 1915, 2093, 2275, 2681, 4025, 4979, 7475, 8809, 9575, 10465, 13405, 24895, 34853, 44045, 52325, 61663, 67025, 114517, 124475, 174265, 220225, 308315, 572585, 801619, 871325, 1541575, 2862925, 4008095, 20040475]

約数ペア:

[(1, 20040475), (5, 4008095), (7, 2862925), (13, 1541575), (23, 871325), (25, 801619), (35, 572585), (65, 308315), (91, 220225), (115, 174265), (161, 124475), (175, 114517), (299, 67025), (325, 61663), (383, 52325), (455, 44045), (575, 34853), (805, 24895), (1495, 13405), (1915, 10465), (2093, 9575), (2275, 8809), (2681, 7475), (4025, 4979)]