81020520

素因数分解:

$2^3\times 3^3\times 5^1\times 7^2\times {\mathrm{1531}}^1$

素因数の和:1565

約数の個数: 192

約数和(自身を含む): 314366400

約数和(自身を除く): 233345880

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 27, 28, 30, 35, 36, 40, 42, 45, 49, 54, 56, 60, 63, 70, 72, 84, 90, 98, 105, 108, 120, 126, 135, 140, 147, 168, 180, 189, 196, 210, 216, 245, 252, 270, 280, 294, 315, 360, 378, 392, 420, 441, 490, 504, 540, 588, 630, 735, 756, 840, 882, 945, 980, 1080, 1176, 1260, 1323, 1470, 1512, 1531, 1764, 1890, 1960, 2205, 2520, 2646, 2940, 3062, 3528, 3780, 4410, 4593, 5292, 5880, 6124, 6615, 7560, 7655, 8820, 9186, 10584, 10717, 12248, 13230, 13779, 15310, 17640, 18372, 21434, 22965, 26460, 27558, 30620, 32151, 36744, 41337, 42868, 45930, 52920, 53585, 55116, 61240, 64302, 68895, 75019, 82674, 85736, 91860, 96453, 107170, 110232, 128604, 137790, 150038, 160755, 165348, 183720, 192906, 206685, 214340, 225057, 257208, 275580, 289359, 300076, 321510, 330696, 375095, 385812, 413370, 428680, 450114, 482265, 551160, 578718, 600152, 643020, 675171, 750190, 771624, 826740, 900228, 964530, 1125285, 1157436, 1286040, 1350342, 1446795, 1500380, 1653480, 1800456, 1929060, 2025513, 2250570, 2314872, 2700684, 2893590, 3000760, 3375855, 3858120, 4051026, 4501140, 5401368, 5787180, 6751710, 8102052, 9002280, 10127565, 11574360, 13503420, 16204104, 20255130, 27006840, 40510260, 81020520]

約数ペア:

[(1, 81020520), (2, 40510260), (3, 27006840), (4, 20255130), (5, 16204104), (6, 13503420), (7, 11574360), (8, 10127565), (9, 9002280), (10, 8102052), (12, 6751710), (14, 5787180), (15, 5401368), (18, 4501140), (20, 4051026), (21, 3858120), (24, 3375855), (27, 3000760), (28, 2893590), (30, 2700684), (35, 2314872), (36, 2250570), (40, 2025513), (42, 1929060), (45, 1800456), (49, 1653480), (54, 1500380), (56, 1446795), (60, 1350342), (63, 1286040), (70, 1157436), (72, 1125285), (84, 964530), (90, 900228), (98, 826740), (105, 771624), (108, 750190), (120, 675171), (126, 643020), (135, 600152), (140, 578718), (147, 551160), (168, 482265), (180, 450114), (189, 428680), (196, 413370), (210, 385812), (216, 375095), (245, 330696), (252, 321510), (270, 300076), (280, 289359), (294, 275580), (315, 257208), (360, 225057), (378, 214340), (392, 206685), (420, 192906), (441, 183720), (490, 165348), (504, 160755), (540, 150038), (588, 137790), (630, 128604), (735, 110232), (756, 107170), (840, 96453), (882, 91860), (945, 85736), (980, 82674), (1080, 75019), (1176, 68895), (1260, 64302), (1323, 61240), (1470, 55116), (1512, 53585), (1531, 52920), (1764, 45930), (1890, 42868), (1960, 41337), (2205, 36744), (2520, 32151), (2646, 30620), (2940, 27558), (3062, 26460), (3528, 22965), (3780, 21434), (4410, 18372), (4593, 17640), (5292, 15310), (5880, 13779), (6124, 13230), (6615, 12248), (7560, 10717), (7655, 10584), (8820, 9186)]