81972840

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{229}}^1$

素因数の和:419

約数の個数: 128

約数和(自身を含む): 261648000

約数和(自身を除く): 179675160

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 19, 20, 24, 30, 38, 40, 57, 60, 76, 95, 114, 120, 152, 157, 190, 228, 229, 285, 314, 380, 456, 458, 471, 570, 628, 687, 760, 785, 916, 942, 1140, 1145, 1256, 1374, 1570, 1832, 1884, 2280, 2290, 2355, 2748, 2983, 3140, 3435, 3768, 4351, 4580, 4710, 5496, 5966, 6280, 6870, 8702, 8949, 9160, 9420, 11932, 13053, 13740, 14915, 17404, 17898, 18840, 21755, 23864, 26106, 27480, 29830, 34808, 35796, 35953, 43510, 44745, 52212, 59660, 65265, 71592, 71906, 87020, 89490, 104424, 107859, 119320, 130530, 143812, 174040, 178980, 179765, 215718, 261060, 287624, 357960, 359530, 431436, 522120, 539295, 683107, 719060, 862872, 1078590, 1366214, 1438120, 2049321, 2157180, 2732428, 3415535, 4098642, 4314360, 5464856, 6831070, 8197284, 10246605, 13662140, 16394568, 20493210, 27324280, 40986420, 81972840]

約数ペア:

[(1, 81972840), (2, 40986420), (3, 27324280), (4, 20493210), (5, 16394568), (6, 13662140), (8, 10246605), (10, 8197284), (12, 6831070), (15, 5464856), (19, 4314360), (20, 4098642), (24, 3415535), (30, 2732428), (38, 2157180), (40, 2049321), (57, 1438120), (60, 1366214), (76, 1078590), (95, 862872), (114, 719060), (120, 683107), (152, 539295), (157, 522120), (190, 431436), (228, 359530), (229, 357960), (285, 287624), (314, 261060), (380, 215718), (456, 179765), (458, 178980), (471, 174040), (570, 143812), (628, 130530), (687, 119320), (760, 107859), (785, 104424), (916, 89490), (942, 87020), (1140, 71906), (1145, 71592), (1256, 65265), (1374, 59660), (1570, 52212), (1832, 44745), (1884, 43510), (2280, 35953), (2290, 35796), (2355, 34808), (2748, 29830), (2983, 27480), (3140, 26106), (3435, 23864), (3768, 21755), (4351, 18840), (4580, 17898), (4710, 17404), (5496, 14915), (5966, 13740), (6280, 13053), (6870, 11932), (8702, 9420), (8949, 9160)]