21029625

素因数分解:

$3^4\times 5^3\times {\mathrm{31}}^1\times {\mathrm{67}}^1$

素因数の和:125

約数の個数: 80

約数和(自身を含む): 41074176

約数和(自身を除く): 20044551

約数列:

[1, 3, 5, 9, 15, 25, 27, 31, 45, 67, 75, 81, 93, 125, 135, 155, 201, 225, 279, 335, 375, 405, 465, 603, 675, 775, 837, 1005, 1125, 1395, 1675, 1809, 2025, 2077, 2325, 2511, 3015, 3375, 3875, 4185, 5025, 5427, 6231, 6975, 8375, 9045, 10125, 10385, 11625, 12555, 15075, 18693, 20925, 25125, 27135, 31155, 34875, 45225, 51925, 56079, 62775, 75375, 93465, 104625, 135675, 155775, 168237, 226125, 259625, 280395, 313875, 467325, 678375, 778875, 841185, 1401975, 2336625, 4205925, 7009875, 21029625]

約数ペア:

[(1, 21029625), (3, 7009875), (5, 4205925), (9, 2336625), (15, 1401975), (25, 841185), (27, 778875), (31, 678375), (45, 467325), (67, 313875), (75, 280395), (81, 259625), (93, 226125), (125, 168237), (135, 155775), (155, 135675), (201, 104625), (225, 93465), (279, 75375), (335, 62775), (375, 56079), (405, 51925), (465, 45225), (603, 34875), (675, 31155), (775, 27135), (837, 25125), (1005, 20925), (1125, 18693), (1395, 15075), (1675, 12555), (1809, 11625), (2025, 10385), (2077, 10125), (2325, 9045), (2511, 8375), (3015, 6975), (3375, 6231), (3875, 5427), (4185, 5025)]