20365625

素因数分解:

$5^5\times 7^3\times {\mathrm{19}}^1$

素因数の和:65

約数の個数: 48

約数和(自身を含む): 31248000

約数和(自身を除く): 10882375

約数列:

[1, 5, 7, 19, 25, 35, 49, 95, 125, 133, 175, 245, 343, 475, 625, 665, 875, 931, 1225, 1715, 2375, 3125, 3325, 4375, 4655, 6125, 6517, 8575, 11875, 16625, 21875, 23275, 30625, 32585, 42875, 59375, 83125, 116375, 153125, 162925, 214375, 415625, 581875, 814625, 1071875, 2909375, 4073125, 20365625]

約数ペア:

[(1, 20365625), (5, 4073125), (7, 2909375), (19, 1071875), (25, 814625), (35, 581875), (49, 415625), (95, 214375), (125, 162925), (133, 153125), (175, 116375), (245, 83125), (343, 59375), (475, 42875), (625, 32585), (665, 30625), (875, 23275), (931, 21875), (1225, 16625), (1715, 11875), (2375, 8575), (3125, 6517), (3325, 6125), (4375, 4655)]