21268080

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{271}}^1$

素因数の和:399

約数の個数: 120

約数和(自身を含む): 72346560

約数和(自身を除く): 51078480

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 109, 120, 144, 180, 218, 240, 271, 327, 360, 436, 542, 545, 654, 720, 813, 872, 981, 1084, 1090, 1308, 1355, 1626, 1635, 1744, 1962, 2168, 2180, 2439, 2616, 2710, 3252, 3270, 3924, 4065, 4336, 4360, 4878, 4905, 5232, 5420, 6504, 6540, 7848, 8130, 8720, 9756, 9810, 10840, 12195, 13008, 13080, 15696, 16260, 19512, 19620, 21680, 24390, 26160, 29539, 32520, 39024, 39240, 48780, 59078, 65040, 78480, 88617, 97560, 118156, 147695, 177234, 195120, 236312, 265851, 295390, 354468, 443085, 472624, 531702, 590780, 708936, 886170, 1063404, 1181560, 1329255, 1417872, 1772340, 2126808, 2363120, 2658510, 3544680, 4253616, 5317020, 7089360, 10634040, 21268080]

約数ペア:

[(1, 21268080), (2, 10634040), (3, 7089360), (4, 5317020), (5, 4253616), (6, 3544680), (8, 2658510), (9, 2363120), (10, 2126808), (12, 1772340), (15, 1417872), (16, 1329255), (18, 1181560), (20, 1063404), (24, 886170), (30, 708936), (36, 590780), (40, 531702), (45, 472624), (48, 443085), (60, 354468), (72, 295390), (80, 265851), (90, 236312), (109, 195120), (120, 177234), (144, 147695), (180, 118156), (218, 97560), (240, 88617), (271, 78480), (327, 65040), (360, 59078), (436, 48780), (542, 39240), (545, 39024), (654, 32520), (720, 29539), (813, 26160), (872, 24390), (981, 21680), (1084, 19620), (1090, 19512), (1308, 16260), (1355, 15696), (1626, 13080), (1635, 13008), (1744, 12195), (1962, 10840), (2168, 9810), (2180, 9756), (2439, 8720), (2616, 8130), (2710, 7848), (3252, 6540), (3270, 6504), (3924, 5420), (4065, 5232), (4336, 4905), (4360, 4878)]