21183140

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{1319}}^1$

素因数の和:1412

約数の個数: 48

約数和(自身を含む): 49230720

約数和(自身を除く): 28047580

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 73, 110, 146, 220, 292, 365, 730, 803, 1319, 1460, 1606, 2638, 3212, 4015, 5276, 6595, 8030, 13190, 14509, 16060, 26380, 29018, 58036, 72545, 96287, 145090, 192574, 290180, 385148, 481435, 962870, 1059157, 1925740, 2118314, 4236628, 5295785, 10591570, 21183140]

約数ペア:

[(1, 21183140), (2, 10591570), (4, 5295785), (5, 4236628), (10, 2118314), (11, 1925740), (20, 1059157), (22, 962870), (44, 481435), (55, 385148), (73, 290180), (110, 192574), (146, 145090), (220, 96287), (292, 72545), (365, 58036), (730, 29018), (803, 26380), (1319, 16060), (1460, 14509), (1606, 13190), (2638, 8030), (3212, 6595), (4015, 5276)]