21249757375

素因数分解:

$5^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{457}}^1\times {\mathrm{4831}}^1$

素因数の和:5321

約数の個数: 64

約数和(自身を含む): 33142726656

約数和(自身を除く): 11892969281

約数列:

[1, 5, 7, 11, 25, 35, 55, 77, 125, 175, 275, 385, 457, 875, 1375, 1925, 2285, 3199, 4831, 5027, 9625, 11425, 15995, 24155, 25135, 33817, 35189, 53141, 57125, 79975, 120775, 125675, 169085, 175945, 265705, 371987, 399875, 603875, 628375, 845425, 879725, 1328525, 1859935, 2207767, 4227125, 4398625, 6642625, 9299675, 11038835, 15454369, 24285437, 46498375, 55194175, 77271845, 121427185, 169998059, 275970875, 386359225, 607135925, 849990295, 1931796125, 3035679625, 4249951475, 21249757375]

約数ペア:

[(1, 21249757375), (5, 4249951475), (7, 3035679625), (11, 1931796125), (25, 849990295), (35, 607135925), (55, 386359225), (77, 275970875), (125, 169998059), (175, 121427185), (275, 77271845), (385, 55194175), (457, 46498375), (875, 24285437), (1375, 15454369), (1925, 11038835), (2285, 9299675), (3199, 6642625), (4831, 4398625), (5027, 4227125), (9625, 2207767), (11425, 1859935), (15995, 1328525), (24155, 879725), (25135, 845425), (33817, 628375), (35189, 603875), (53141, 399875), (57125, 371987), (79975, 265705), (120775, 175945), (125675, 169085)]