81007320

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{271}}^1$

素因数の和:385

約数の個数: 128

約数和(自身を含む): 253808640

約数和(自身を除く): 172801320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 47, 53, 60, 94, 106, 120, 141, 159, 188, 212, 235, 265, 271, 282, 318, 376, 424, 470, 530, 542, 564, 636, 705, 795, 813, 940, 1060, 1084, 1128, 1272, 1355, 1410, 1590, 1626, 1880, 2120, 2168, 2491, 2710, 2820, 3180, 3252, 4065, 4982, 5420, 5640, 6360, 6504, 7473, 8130, 9964, 10840, 12455, 12737, 14363, 14946, 16260, 19928, 24910, 25474, 28726, 29892, 32520, 37365, 38211, 43089, 49820, 50948, 57452, 59784, 63685, 71815, 74730, 76422, 86178, 99640, 101896, 114904, 127370, 143630, 149460, 152844, 172356, 191055, 215445, 254740, 287260, 298920, 305688, 344712, 382110, 430890, 509480, 574520, 675061, 764220, 861780, 1350122, 1528440, 1723560, 2025183, 2700244, 3375305, 4050366, 5400488, 6750610, 8100732, 10125915, 13501220, 16201464, 20251830, 27002440, 40503660, 81007320]

約数ペア:

[(1, 81007320), (2, 40503660), (3, 27002440), (4, 20251830), (5, 16201464), (6, 13501220), (8, 10125915), (10, 8100732), (12, 6750610), (15, 5400488), (20, 4050366), (24, 3375305), (30, 2700244), (40, 2025183), (47, 1723560), (53, 1528440), (60, 1350122), (94, 861780), (106, 764220), (120, 675061), (141, 574520), (159, 509480), (188, 430890), (212, 382110), (235, 344712), (265, 305688), (271, 298920), (282, 287260), (318, 254740), (376, 215445), (424, 191055), (470, 172356), (530, 152844), (542, 149460), (564, 143630), (636, 127370), (705, 114904), (795, 101896), (813, 99640), (940, 86178), (1060, 76422), (1084, 74730), (1128, 71815), (1272, 63685), (1355, 59784), (1410, 57452), (1590, 50948), (1626, 49820), (1880, 43089), (2120, 38211), (2168, 37365), (2491, 32520), (2710, 29892), (2820, 28726), (3180, 25474), (3252, 24910), (4065, 19928), (4982, 16260), (5420, 14946), (5640, 14363), (6360, 12737), (6504, 12455), (7473, 10840), (8130, 9964)]