81013660

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{6359}}^1$

素因数の和:6395

約数の個数: 72

約数和(自身を含む): 213161760

約数和(自身を除く): 132148100

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 49, 52, 65, 70, 91, 98, 130, 140, 182, 196, 245, 260, 364, 455, 490, 637, 910, 980, 1274, 1820, 2548, 3185, 6359, 6370, 12718, 12740, 25436, 31795, 44513, 63590, 82667, 89026, 127180, 165334, 178052, 222565, 311591, 330668, 413335, 445130, 578669, 623182, 826670, 890260, 1157338, 1246364, 1557955, 1653340, 2314676, 2893345, 3115910, 4050683, 5786690, 6231820, 8101366, 11573380, 16202732, 20253415, 40506830, 81013660]

約数ペア:

[(1, 81013660), (2, 40506830), (4, 20253415), (5, 16202732), (7, 11573380), (10, 8101366), (13, 6231820), (14, 5786690), (20, 4050683), (26, 3115910), (28, 2893345), (35, 2314676), (49, 1653340), (52, 1557955), (65, 1246364), (70, 1157338), (91, 890260), (98, 826670), (130, 623182), (140, 578669), (182, 445130), (196, 413335), (245, 330668), (260, 311591), (364, 222565), (455, 178052), (490, 165334), (637, 127180), (910, 89026), (980, 82667), (1274, 63590), (1820, 44513), (2548, 31795), (3185, 25436), (6359, 12740), (6370, 12718)]