261378480

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{181}}^1\times {\mathrm{547}}^1$

素因数の和:755

約数の個数: 160

約数和(自身を含む): 890443008

約数和(自身を除く): 629064528

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 20, 22, 24, 30, 33, 40, 44, 48, 55, 60, 66, 80, 88, 110, 120, 132, 165, 176, 181, 220, 240, 264, 330, 362, 440, 528, 543, 547, 660, 724, 880, 905, 1086, 1094, 1320, 1448, 1641, 1810, 1991, 2172, 2188, 2640, 2715, 2735, 2896, 3282, 3620, 3982, 4344, 4376, 5430, 5470, 5973, 6017, 6564, 7240, 7964, 8205, 8688, 8752, 9955, 10860, 10940, 11946, 12034, 13128, 14480, 15928, 16410, 18051, 19910, 21720, 21880, 23892, 24068, 26256, 29865, 30085, 31856, 32820, 36102, 39820, 43440, 43760, 47784, 48136, 59730, 60170, 65640, 72204, 79640, 90255, 95568, 96272, 99007, 119460, 120340, 131280, 144408, 159280, 180510, 198014, 238920, 240680, 288816, 297021, 361020, 396028, 477840, 481360, 495035, 594042, 722040, 792056, 990070, 1089077, 1188084, 1444080, 1485105, 1584112, 1980140, 2178154, 2376168, 2970210, 3267231, 3960280, 4356308, 4752336, 5445385, 5940420, 6534462, 7920560, 8712616, 10890770, 11880840, 13068924, 16336155, 17425232, 21781540, 23761680, 26137848, 32672310, 43563080, 52275696, 65344620, 87126160, 130689240, 261378480]

約数ペア:

[(1, 261378480), (2, 130689240), (3, 87126160), (4, 65344620), (5, 52275696), (6, 43563080), (8, 32672310), (10, 26137848), (11, 23761680), (12, 21781540), (15, 17425232), (16, 16336155), (20, 13068924), (22, 11880840), (24, 10890770), (30, 8712616), (33, 7920560), (40, 6534462), (44, 5940420), (48, 5445385), (55, 4752336), (60, 4356308), (66, 3960280), (80, 3267231), (88, 2970210), (110, 2376168), (120, 2178154), (132, 1980140), (165, 1584112), (176, 1485105), (181, 1444080), (220, 1188084), (240, 1089077), (264, 990070), (330, 792056), (362, 722040), (440, 594042), (528, 495035), (543, 481360), (547, 477840), (660, 396028), (724, 361020), (880, 297021), (905, 288816), (1086, 240680), (1094, 238920), (1320, 198014), (1448, 180510), (1641, 159280), (1810, 144408), (1991, 131280), (2172, 120340), (2188, 119460), (2640, 99007), (2715, 96272), (2735, 95568), (2896, 90255), (3282, 79640), (3620, 72204), (3982, 65640), (4344, 60170), (4376, 59730), (5430, 48136), (5470, 47784), (5973, 43760), (6017, 43440), (6564, 39820), (7240, 36102), (7964, 32820), (8205, 31856), (8688, 30085), (8752, 29865), (9955, 26256), (10860, 24068), (10940, 23892), (11946, 21880), (12034, 21720), (13128, 19910), (14480, 18051), (15928, 16410)]