81355680

素因数分解:

$2^5\times 3^2\times 5^1\times 7^2\times {\mathrm{1153}}^1$

素因数の和:1188

約数の個数: 216

約数和(自身を含む): 323233092

約数和(自身を除く): 241877412

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 32, 35, 36, 40, 42, 45, 48, 49, 56, 60, 63, 70, 72, 80, 84, 90, 96, 98, 105, 112, 120, 126, 140, 144, 147, 160, 168, 180, 196, 210, 224, 240, 245, 252, 280, 288, 294, 315, 336, 360, 392, 420, 441, 480, 490, 504, 560, 588, 630, 672, 720, 735, 784, 840, 882, 980, 1008, 1120, 1153, 1176, 1260, 1440, 1470, 1568, 1680, 1764, 1960, 2016, 2205, 2306, 2352, 2520, 2940, 3360, 3459, 3528, 3920, 4410, 4612, 4704, 5040, 5765, 5880, 6918, 7056, 7840, 8071, 8820, 9224, 10080, 10377, 11530, 11760, 13836, 14112, 16142, 17295, 17640, 18448, 20754, 23060, 23520, 24213, 27672, 32284, 34590, 35280, 36896, 40355, 41508, 46120, 48426, 51885, 55344, 56497, 64568, 69180, 70560, 72639, 80710, 83016, 92240, 96852, 103770, 110688, 112994, 121065, 129136, 138360, 145278, 161420, 166032, 169491, 184480, 193704, 207540, 225988, 242130, 258272, 276720, 282485, 290556, 322840, 332064, 338982, 363195, 387408, 415080, 451976, 484260, 508473, 553440, 564970, 581112, 645680, 677964, 726390, 774816, 830160, 847455, 903952, 968520, 1016946, 1129940, 1162224, 1291360, 1355928, 1452780, 1660320, 1694910, 1807904, 1937040, 2033892, 2259880, 2324448, 2542365, 2711856, 2905560, 3389820, 3874080, 4067784, 4519760, 5084730, 5423712, 5811120, 6779640, 8135568, 9039520, 10169460, 11622240, 13559280, 16271136, 20338920, 27118560, 40677840, 81355680]

約数ペア:

[(1, 81355680), (2, 40677840), (3, 27118560), (4, 20338920), (5, 16271136), (6, 13559280), (7, 11622240), (8, 10169460), (9, 9039520), (10, 8135568), (12, 6779640), (14, 5811120), (15, 5423712), (16, 5084730), (18, 4519760), (20, 4067784), (21, 3874080), (24, 3389820), (28, 2905560), (30, 2711856), (32, 2542365), (35, 2324448), (36, 2259880), (40, 2033892), (42, 1937040), (45, 1807904), (48, 1694910), (49, 1660320), (56, 1452780), (60, 1355928), (63, 1291360), (70, 1162224), (72, 1129940), (80, 1016946), (84, 968520), (90, 903952), (96, 847455), (98, 830160), (105, 774816), (112, 726390), (120, 677964), (126, 645680), (140, 581112), (144, 564970), (147, 553440), (160, 508473), (168, 484260), (180, 451976), (196, 415080), (210, 387408), (224, 363195), (240, 338982), (245, 332064), (252, 322840), (280, 290556), (288, 282485), (294, 276720), (315, 258272), (336, 242130), (360, 225988), (392, 207540), (420, 193704), (441, 184480), (480, 169491), (490, 166032), (504, 161420), (560, 145278), (588, 138360), (630, 129136), (672, 121065), (720, 112994), (735, 110688), (784, 103770), (840, 96852), (882, 92240), (980, 83016), (1008, 80710), (1120, 72639), (1153, 70560), (1176, 69180), (1260, 64568), (1440, 56497), (1470, 55344), (1568, 51885), (1680, 48426), (1764, 46120), (1960, 41508), (2016, 40355), (2205, 36896), (2306, 35280), (2352, 34590), (2520, 32284), (2940, 27672), (3360, 24213), (3459, 23520), (3528, 23060), (3920, 20754), (4410, 18448), (4612, 17640), (4704, 17295), (5040, 16142), (5765, 14112), (5880, 13836), (6918, 11760), (7056, 11530), (7840, 10377), (8071, 10080), (8820, 9224)]