28404075

素因数分解:

$3^1\times 5^2\times 7^2\times {\mathrm{59}}^1\times {\mathrm{131}}^1$

素因数の和:217

約数の個数: 72

約数和(自身を含む): 55978560

約数和(自身を除く): 27574485

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 49, 59, 75, 105, 131, 147, 175, 177, 245, 295, 393, 413, 525, 655, 735, 885, 917, 1225, 1239, 1475, 1965, 2065, 2751, 2891, 3275, 3675, 4425, 4585, 6195, 6419, 7729, 8673, 9825, 10325, 13755, 14455, 19257, 22925, 23187, 30975, 32095, 38645, 43365, 54103, 68775, 72275, 96285, 115935, 160475, 162309, 193225, 216825, 270515, 378721, 481425, 579675, 811545, 1136163, 1352575, 1893605, 4057725, 5680815, 9468025, 28404075]

約数ペア:

[(1, 28404075), (3, 9468025), (5, 5680815), (7, 4057725), (15, 1893605), (21, 1352575), (25, 1136163), (35, 811545), (49, 579675), (59, 481425), (75, 378721), (105, 270515), (131, 216825), (147, 193225), (175, 162309), (177, 160475), (245, 115935), (295, 96285), (393, 72275), (413, 68775), (525, 54103), (655, 43365), (735, 38645), (885, 32095), (917, 30975), (1225, 23187), (1239, 22925), (1475, 19257), (1965, 14455), (2065, 13755), (2751, 10325), (2891, 9825), (3275, 8673), (3675, 7729), (4425, 6419), (4585, 6195)]