18640125

素因数分解:

$3^4\times 5^3\times 7^1\times {\mathrm{263}}^1$

素因数の和:297

約数の個数: 80

約数和(自身を含む): 39866112

約数和(自身を除く): 21225987

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 27, 35, 45, 63, 75, 81, 105, 125, 135, 175, 189, 225, 263, 315, 375, 405, 525, 567, 675, 789, 875, 945, 1125, 1315, 1575, 1841, 2025, 2367, 2625, 2835, 3375, 3945, 4725, 5523, 6575, 7101, 7875, 9205, 10125, 11835, 14175, 16569, 19725, 21303, 23625, 27615, 32875, 35505, 46025, 49707, 59175, 70875, 82845, 98625, 106515, 138075, 149121, 177525, 230125, 248535, 295875, 414225, 532575, 690375, 745605, 887625, 1242675, 2071125, 2662875, 3728025, 6213375, 18640125]

約数ペア:

[(1, 18640125), (3, 6213375), (5, 3728025), (7, 2662875), (9, 2071125), (15, 1242675), (21, 887625), (25, 745605), (27, 690375), (35, 532575), (45, 414225), (63, 295875), (75, 248535), (81, 230125), (105, 177525), (125, 149121), (135, 138075), (175, 106515), (189, 98625), (225, 82845), (263, 70875), (315, 59175), (375, 49707), (405, 46025), (525, 35505), (567, 32875), (675, 27615), (789, 23625), (875, 21303), (945, 19725), (1125, 16569), (1315, 14175), (1575, 11835), (1841, 10125), (2025, 9205), (2367, 7875), (2625, 7101), (2835, 6575), (3375, 5523), (3945, 4725)]