21026640

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{1109}}^1$

素因数の和:1204

約数の個数: 80

約数和(自身を含む): 66067200

約数和(自身を除く): 45040560

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 79, 80, 120, 158, 237, 240, 316, 395, 474, 632, 790, 948, 1109, 1185, 1264, 1580, 1896, 2218, 2370, 3160, 3327, 3792, 4436, 4740, 5545, 6320, 6654, 8872, 9480, 11090, 13308, 16635, 17744, 18960, 22180, 26616, 33270, 44360, 53232, 66540, 87611, 88720, 133080, 175222, 262833, 266160, 350444, 438055, 525666, 700888, 876110, 1051332, 1314165, 1401776, 1752220, 2102664, 2628330, 3504440, 4205328, 5256660, 7008880, 10513320, 21026640]

約数ペア:

[(1, 21026640), (2, 10513320), (3, 7008880), (4, 5256660), (5, 4205328), (6, 3504440), (8, 2628330), (10, 2102664), (12, 1752220), (15, 1401776), (16, 1314165), (20, 1051332), (24, 876110), (30, 700888), (40, 525666), (48, 438055), (60, 350444), (79, 266160), (80, 262833), (120, 175222), (158, 133080), (237, 88720), (240, 87611), (316, 66540), (395, 53232), (474, 44360), (632, 33270), (790, 26616), (948, 22180), (1109, 18960), (1185, 17744), (1264, 16635), (1580, 13308), (1896, 11090), (2218, 9480), (2370, 8872), (3160, 6654), (3327, 6320), (3792, 5545), (4436, 4740)]