81865260

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{15683}}^1$

素因数の和:15727

約数の個数: 72

約数和(自身を含む): 256903920

約数和(自身を除く): 175038660

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 29, 30, 36, 45, 58, 60, 87, 90, 116, 145, 174, 180, 261, 290, 348, 435, 522, 580, 870, 1044, 1305, 1740, 2610, 5220, 15683, 31366, 47049, 62732, 78415, 94098, 141147, 156830, 188196, 235245, 282294, 313660, 454807, 470490, 564588, 705735, 909614, 940980, 1364421, 1411470, 1819228, 2274035, 2728842, 2822940, 4093263, 4548070, 5457684, 6822105, 8186526, 9096140, 13644210, 16373052, 20466315, 27288420, 40932630, 81865260]

約数ペア:

[(1, 81865260), (2, 40932630), (3, 27288420), (4, 20466315), (5, 16373052), (6, 13644210), (9, 9096140), (10, 8186526), (12, 6822105), (15, 5457684), (18, 4548070), (20, 4093263), (29, 2822940), (30, 2728842), (36, 2274035), (45, 1819228), (58, 1411470), (60, 1364421), (87, 940980), (90, 909614), (116, 705735), (145, 564588), (174, 470490), (180, 454807), (261, 313660), (290, 282294), (348, 235245), (435, 188196), (522, 156830), (580, 141147), (870, 94098), (1044, 78415), (1305, 62732), (1740, 47049), (2610, 31366), (5220, 15683)]