21528720

素因数分解:

$2^4\times 3^3\times 5^1\times {\mathrm{9967}}^1$

素因数の和:9989

約数の個数: 80

約数和(自身を含む): 74161920

約数和(自身を除く): 52633200

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 36, 40, 45, 48, 54, 60, 72, 80, 90, 108, 120, 135, 144, 180, 216, 240, 270, 360, 432, 540, 720, 1080, 2160, 9967, 19934, 29901, 39868, 49835, 59802, 79736, 89703, 99670, 119604, 149505, 159472, 179406, 199340, 239208, 269109, 299010, 358812, 398680, 448515, 478416, 538218, 598020, 717624, 797360, 897030, 1076436, 1196040, 1345545, 1435248, 1794060, 2152872, 2392080, 2691090, 3588120, 4305744, 5382180, 7176240, 10764360, 21528720]

約数ペア:

[(1, 21528720), (2, 10764360), (3, 7176240), (4, 5382180), (5, 4305744), (6, 3588120), (8, 2691090), (9, 2392080), (10, 2152872), (12, 1794060), (15, 1435248), (16, 1345545), (18, 1196040), (20, 1076436), (24, 897030), (27, 797360), (30, 717624), (36, 598020), (40, 538218), (45, 478416), (48, 448515), (54, 398680), (60, 358812), (72, 299010), (80, 269109), (90, 239208), (108, 199340), (120, 179406), (135, 159472), (144, 149505), (180, 119604), (216, 99670), (240, 89703), (270, 79736), (360, 59802), (432, 49835), (540, 39868), (720, 29901), (1080, 19934), (2160, 9967)]