20121222580

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{439}}^1\times {\mathrm{29009}}^1$

素因数の和:29536

約数の個数: 48

約数和(自身を含む): 42888384000

約数和(自身を除く): 22767161420

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 439, 790, 878, 1580, 1756, 2195, 4390, 8780, 29009, 34681, 58018, 69362, 116036, 138724, 145045, 173405, 290090, 346810, 580180, 693620, 2291711, 4583422, 9166844, 11458555, 12734951, 22917110, 25469902, 45834220, 50939804, 63674755, 127349510, 254699020, 1006061129, 2012122258, 4024244516, 5030305645, 10060611290, 20121222580]

約数ペア:

[(1, 20121222580), (2, 10060611290), (4, 5030305645), (5, 4024244516), (10, 2012122258), (20, 1006061129), (79, 254699020), (158, 127349510), (316, 63674755), (395, 50939804), (439, 45834220), (790, 25469902), (878, 22917110), (1580, 12734951), (1756, 11458555), (2195, 9166844), (4390, 4583422), (8780, 2291711), (29009, 693620), (34681, 580180), (58018, 346810), (69362, 290090), (116036, 173405), (138724, 145045)]