21345625

素因数分解:

$5^4\times 7^2\times {\mathrm{17}}^1\times {\mathrm{41}}^1$

素因数の和:92

約数の個数: 60

約数和(自身を含む): 33654852

約数和(自身を除く): 12309227

約数列:

[1, 5, 7, 17, 25, 35, 41, 49, 85, 119, 125, 175, 205, 245, 287, 425, 595, 625, 697, 833, 875, 1025, 1225, 1435, 2009, 2125, 2975, 3485, 4165, 4375, 4879, 5125, 6125, 7175, 10045, 10625, 14875, 17425, 20825, 24395, 25625, 30625, 34153, 35875, 50225, 74375, 87125, 104125, 121975, 170765, 179375, 251125, 435625, 520625, 609875, 853825, 1255625, 3049375, 4269125, 21345625]

約数ペア:

[(1, 21345625), (5, 4269125), (7, 3049375), (17, 1255625), (25, 853825), (35, 609875), (41, 520625), (49, 435625), (85, 251125), (119, 179375), (125, 170765), (175, 121975), (205, 104125), (245, 87125), (287, 74375), (425, 50225), (595, 35875), (625, 34153), (697, 30625), (833, 25625), (875, 24395), (1025, 20825), (1225, 17425), (1435, 14875), (2009, 10625), (2125, 10045), (2975, 7175), (3485, 6125), (4165, 5125), (4375, 4879)]