21329440

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{12119}}^1$

素因数の和:12145

約数の個数: 48

約数和(自身を含む): 54976320

約数和(自身を除く): 33646880

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 160, 176, 220, 352, 440, 880, 1760, 12119, 24238, 48476, 60595, 96952, 121190, 133309, 193904, 242380, 266618, 387808, 484760, 533236, 666545, 969520, 1066472, 1333090, 1939040, 2132944, 2666180, 4265888, 5332360, 10664720, 21329440]

約数ペア:

[(1, 21329440), (2, 10664720), (4, 5332360), (5, 4265888), (8, 2666180), (10, 2132944), (11, 1939040), (16, 1333090), (20, 1066472), (22, 969520), (32, 666545), (40, 533236), (44, 484760), (55, 387808), (80, 266618), (88, 242380), (110, 193904), (160, 133309), (176, 121190), (220, 96952), (352, 60595), (440, 48476), (880, 24238), (1760, 12119)]