20470975

素因数分解:

$5^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{983}}^1$

素因数の和:1024

約数の個数: 36

約数和(自身を含む): 31297104

約数和(自身を除く): 10826129

約数列:

[1, 5, 7, 17, 25, 35, 49, 85, 119, 175, 245, 425, 595, 833, 983, 1225, 2975, 4165, 4915, 6881, 16711, 20825, 24575, 34405, 48167, 83555, 116977, 172025, 240835, 417775, 584885, 818839, 1204175, 2924425, 4094195, 20470975]

約数ペア:

[(1, 20470975), (5, 4094195), (7, 2924425), (17, 1204175), (25, 818839), (35, 584885), (49, 417775), (85, 240835), (119, 172025), (175, 116977), (245, 83555), (425, 48167), (595, 34405), (833, 24575), (983, 20825), (1225, 16711), (2975, 6881), (4165, 4915)]