81227090

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{389}}^1$

素因数の和:579

約数の個数: 64

約数和(自身を含む): 177465600

約数和(自身を除く): 96238510

約数列:

[1, 2, 5, 7, 10, 14, 19, 35, 38, 70, 95, 133, 157, 190, 266, 314, 389, 665, 778, 785, 1099, 1330, 1570, 1945, 2198, 2723, 2983, 3890, 5446, 5495, 5966, 7391, 10990, 13615, 14782, 14915, 20881, 27230, 29830, 36955, 41762, 51737, 61073, 73910, 103474, 104405, 122146, 208810, 258685, 305365, 427511, 517370, 610730, 855022, 1160387, 2137555, 2320774, 4275110, 5801935, 8122709, 11603870, 16245418, 40613545, 81227090]

約数ペア:

[(1, 81227090), (2, 40613545), (5, 16245418), (7, 11603870), (10, 8122709), (14, 5801935), (19, 4275110), (35, 2320774), (38, 2137555), (70, 1160387), (95, 855022), (133, 610730), (157, 517370), (190, 427511), (266, 305365), (314, 258685), (389, 208810), (665, 122146), (778, 104405), (785, 103474), (1099, 73910), (1330, 61073), (1570, 51737), (1945, 41762), (2198, 36955), (2723, 29830), (2983, 27230), (3890, 20881), (5446, 14915), (5495, 14782), (5966, 13615), (7391, 10990)]