81015440

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{2141}}^1$

素因数の和:2208

約数の個数: 80

約数和(自身を含む): 210361536

約数和(自身を除く): 129346096

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 43, 44, 55, 80, 86, 88, 110, 172, 176, 215, 220, 344, 430, 440, 473, 688, 860, 880, 946, 1720, 1892, 2141, 2365, 3440, 3784, 4282, 4730, 7568, 8564, 9460, 10705, 17128, 18920, 21410, 23551, 34256, 37840, 42820, 47102, 85640, 92063, 94204, 117755, 171280, 184126, 188408, 235510, 368252, 376816, 460315, 471020, 736504, 920630, 942040, 1012693, 1473008, 1841260, 1884080, 2025386, 3682520, 4050772, 5063465, 7365040, 8101544, 10126930, 16203088, 20253860, 40507720, 81015440]

約数ペア:

[(1, 81015440), (2, 40507720), (4, 20253860), (5, 16203088), (8, 10126930), (10, 8101544), (11, 7365040), (16, 5063465), (20, 4050772), (22, 3682520), (40, 2025386), (43, 1884080), (44, 1841260), (55, 1473008), (80, 1012693), (86, 942040), (88, 920630), (110, 736504), (172, 471020), (176, 460315), (215, 376816), (220, 368252), (344, 235510), (430, 188408), (440, 184126), (473, 171280), (688, 117755), (860, 94204), (880, 92063), (946, 85640), (1720, 47102), (1892, 42820), (2141, 37840), (2365, 34256), (3440, 23551), (3784, 21410), (4282, 18920), (4730, 17128), (7568, 10705), (8564, 9460)]