21492625

素因数分解:

$5^3\times 7^2\times {\mathrm{11}}^2\times {\mathrm{29}}^1$

素因数の和:80

約数の個数: 72

約数和(自身を含む): 35479080

約数和(自身を除く): 13986455

約数列:

[1, 5, 7, 11, 25, 29, 35, 49, 55, 77, 121, 125, 145, 175, 203, 245, 275, 319, 385, 539, 605, 725, 847, 875, 1015, 1225, 1375, 1421, 1595, 1925, 2233, 2695, 3025, 3509, 3625, 4235, 5075, 5929, 6125, 7105, 7975, 9625, 11165, 13475, 15125, 15631, 17545, 21175, 24563, 25375, 29645, 35525, 39875, 55825, 67375, 78155, 87725, 105875, 122815, 148225, 171941, 177625, 279125, 390775, 438625, 614075, 741125, 859705, 1953875, 3070375, 4298525, 21492625]

約数ペア:

[(1, 21492625), (5, 4298525), (7, 3070375), (11, 1953875), (25, 859705), (29, 741125), (35, 614075), (49, 438625), (55, 390775), (77, 279125), (121, 177625), (125, 171941), (145, 148225), (175, 122815), (203, 105875), (245, 87725), (275, 78155), (319, 67375), (385, 55825), (539, 39875), (605, 35525), (725, 29645), (847, 25375), (875, 24563), (1015, 21175), (1225, 17545), (1375, 15631), (1421, 15125), (1595, 13475), (1925, 11165), (2233, 9625), (2695, 7975), (3025, 7105), (3509, 6125), (3625, 5929), (4235, 5075)]