81990612

素因数分解:

$2^2\times 3^2\times {\mathrm{11}}^1\times {\mathrm{197}}^1\times {\mathrm{1051}}^1$

素因数の和:1269

約数の個数: 72

約数和(自身を含む): 227459232

約数和(自身を除く): 145468620

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 18, 22, 33, 36, 44, 66, 99, 132, 197, 198, 394, 396, 591, 788, 1051, 1182, 1773, 2102, 2167, 2364, 3153, 3546, 4204, 4334, 6306, 6501, 7092, 8668, 9459, 11561, 12612, 13002, 18918, 19503, 23122, 26004, 34683, 37836, 39006, 46244, 69366, 78012, 104049, 138732, 207047, 208098, 414094, 416196, 621141, 828188, 1242282, 1863423, 2277517, 2484564, 3726846, 4555034, 6832551, 7453692, 9110068, 13665102, 20497653, 27330204, 40995306, 81990612]

約数ペア:

[(1, 81990612), (2, 40995306), (3, 27330204), (4, 20497653), (6, 13665102), (9, 9110068), (11, 7453692), (12, 6832551), (18, 4555034), (22, 3726846), (33, 2484564), (36, 2277517), (44, 1863423), (66, 1242282), (99, 828188), (132, 621141), (197, 416196), (198, 414094), (394, 208098), (396, 207047), (591, 138732), (788, 104049), (1051, 78012), (1182, 69366), (1773, 46244), (2102, 39006), (2167, 37836), (2364, 34683), (3153, 26004), (3546, 23122), (4204, 19503), (4334, 18918), (6306, 13002), (6501, 12612), (7092, 11561), (8668, 9459)]