20506640

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{3329}}^1$

素因数の和:3360

約数の個数: 80

約数和(自身を含む): 59460480

約数和(自身を除く): 38953840

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 80, 88, 110, 112, 140, 154, 176, 220, 280, 308, 385, 440, 560, 616, 770, 880, 1232, 1540, 3080, 3329, 6160, 6658, 13316, 16645, 23303, 26632, 33290, 36619, 46606, 53264, 66580, 73238, 93212, 116515, 133160, 146476, 183095, 186424, 233030, 256333, 266320, 292952, 366190, 372848, 466060, 512666, 585904, 732380, 932120, 1025332, 1281665, 1464760, 1864240, 2050664, 2563330, 2929520, 4101328, 5126660, 10253320, 20506640]

約数ペア:

[(1, 20506640), (2, 10253320), (4, 5126660), (5, 4101328), (7, 2929520), (8, 2563330), (10, 2050664), (11, 1864240), (14, 1464760), (16, 1281665), (20, 1025332), (22, 932120), (28, 732380), (35, 585904), (40, 512666), (44, 466060), (55, 372848), (56, 366190), (70, 292952), (77, 266320), (80, 256333), (88, 233030), (110, 186424), (112, 183095), (140, 146476), (154, 133160), (176, 116515), (220, 93212), (280, 73238), (308, 66580), (385, 53264), (440, 46606), (560, 36619), (616, 33290), (770, 26632), (880, 23303), (1232, 16645), (1540, 13316), (3080, 6658), (3329, 6160)]