28288750

素因数分解:

$2^1\times 5^4\times 7^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1$

素因数の和:143

約数の個数: 80

約数和(自身を含む): 62754912

約数和(自身を除く): 34466162

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 50, 53, 61, 70, 106, 122, 125, 175, 250, 265, 305, 350, 371, 427, 530, 610, 625, 742, 854, 875, 1250, 1325, 1525, 1750, 1855, 2135, 2650, 3050, 3233, 3710, 4270, 4375, 6466, 6625, 7625, 8750, 9275, 10675, 13250, 15250, 16165, 18550, 21350, 22631, 32330, 33125, 38125, 45262, 46375, 53375, 66250, 76250, 80825, 92750, 106750, 113155, 161650, 226310, 231875, 266875, 404125, 463750, 533750, 565775, 808250, 1131550, 2020625, 2828875, 4041250, 5657750, 14144375, 28288750]

約数ペア:

[(1, 28288750), (2, 14144375), (5, 5657750), (7, 4041250), (10, 2828875), (14, 2020625), (25, 1131550), (35, 808250), (50, 565775), (53, 533750), (61, 463750), (70, 404125), (106, 266875), (122, 231875), (125, 226310), (175, 161650), (250, 113155), (265, 106750), (305, 92750), (350, 80825), (371, 76250), (427, 66250), (530, 53375), (610, 46375), (625, 45262), (742, 38125), (854, 33125), (875, 32330), (1250, 22631), (1325, 21350), (1525, 18550), (1750, 16165), (1855, 15250), (2135, 13250), (2650, 10675), (3050, 9275), (3233, 8750), (3710, 7625), (4270, 6625), (4375, 6466)]