20782090

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{157}}^1$

素因数の和:263

約数の個数: 64

約数和(自身を含む): 45139968

約数和(自身を除く): 24357878

約数列:

[1, 2, 5, 7, 10, 14, 31, 35, 61, 62, 70, 122, 155, 157, 217, 305, 310, 314, 427, 434, 610, 785, 854, 1085, 1099, 1570, 1891, 2135, 2170, 2198, 3782, 4270, 4867, 5495, 9455, 9577, 9734, 10990, 13237, 18910, 19154, 24335, 26474, 34069, 47885, 48670, 66185, 67039, 68138, 95770, 132370, 134078, 170345, 296887, 335195, 340690, 593774, 670390, 1484435, 2078209, 2968870, 4156418, 10391045, 20782090]

約数ペア:

[(1, 20782090), (2, 10391045), (5, 4156418), (7, 2968870), (10, 2078209), (14, 1484435), (31, 670390), (35, 593774), (61, 340690), (62, 335195), (70, 296887), (122, 170345), (155, 134078), (157, 132370), (217, 95770), (305, 68138), (310, 67039), (314, 66185), (427, 48670), (434, 47885), (610, 34069), (785, 26474), (854, 24335), (1085, 19154), (1099, 18910), (1570, 13237), (1891, 10990), (2135, 9734), (2170, 9577), (2198, 9455), (3782, 5495), (4270, 4867)]