81156540

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{139}}^1\times {\mathrm{263}}^1$

素因数の和:451

約数の個数: 96

約数和(自身を含む): 235952640

約数和(自身を除く): 154796100

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 37, 60, 74, 111, 139, 148, 185, 222, 263, 278, 370, 417, 444, 526, 555, 556, 695, 740, 789, 834, 1052, 1110, 1315, 1390, 1578, 1668, 2085, 2220, 2630, 2780, 3156, 3945, 4170, 5143, 5260, 7890, 8340, 9731, 10286, 15429, 15780, 19462, 20572, 25715, 29193, 30858, 36557, 38924, 48655, 51430, 58386, 61716, 73114, 77145, 97310, 102860, 109671, 116772, 145965, 146228, 154290, 182785, 194620, 219342, 291930, 308580, 365570, 438684, 548355, 583860, 731140, 1096710, 1352609, 2193420, 2705218, 4057827, 5410436, 6763045, 8115654, 13526090, 16231308, 20289135, 27052180, 40578270, 81156540]

約数ペア:

[(1, 81156540), (2, 40578270), (3, 27052180), (4, 20289135), (5, 16231308), (6, 13526090), (10, 8115654), (12, 6763045), (15, 5410436), (20, 4057827), (30, 2705218), (37, 2193420), (60, 1352609), (74, 1096710), (111, 731140), (139, 583860), (148, 548355), (185, 438684), (222, 365570), (263, 308580), (278, 291930), (370, 219342), (417, 194620), (444, 182785), (526, 154290), (555, 146228), (556, 145965), (695, 116772), (740, 109671), (789, 102860), (834, 97310), (1052, 77145), (1110, 73114), (1315, 61716), (1390, 58386), (1578, 51430), (1668, 48655), (2085, 38924), (2220, 36557), (2630, 30858), (2780, 29193), (3156, 25715), (3945, 20572), (4170, 19462), (5143, 15780), (5260, 15429), (7890, 10286), (8340, 9731)]