81722340

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{821}}^1$

素因数の和:922

約数の個数: 144

約数和(自身を含む): 287239680

約数和(自身を除く): 205517340

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 79, 84, 90, 105, 126, 140, 158, 180, 210, 237, 252, 315, 316, 395, 420, 474, 553, 630, 711, 790, 821, 948, 1106, 1185, 1260, 1422, 1580, 1642, 1659, 2212, 2370, 2463, 2765, 2844, 3284, 3318, 3555, 4105, 4740, 4926, 4977, 5530, 5747, 6636, 7110, 7389, 8210, 8295, 9852, 9954, 11060, 11494, 12315, 14220, 14778, 16420, 16590, 17241, 19908, 22988, 24630, 24885, 28735, 29556, 33180, 34482, 36945, 49260, 49770, 51723, 57470, 64859, 68964, 73890, 86205, 99540, 103446, 114940, 129718, 147780, 172410, 194577, 206892, 258615, 259436, 324295, 344820, 389154, 454013, 517230, 583731, 648590, 778308, 908026, 972885, 1034460, 1167462, 1297180, 1362039, 1816052, 1945770, 2270065, 2334924, 2724078, 2918655, 3891540, 4086117, 4540130, 5448156, 5837310, 6810195, 8172234, 9080260, 11674620, 13620390, 16344468, 20430585, 27240780, 40861170, 81722340]

約数ペア:

[(1, 81722340), (2, 40861170), (3, 27240780), (4, 20430585), (5, 16344468), (6, 13620390), (7, 11674620), (9, 9080260), (10, 8172234), (12, 6810195), (14, 5837310), (15, 5448156), (18, 4540130), (20, 4086117), (21, 3891540), (28, 2918655), (30, 2724078), (35, 2334924), (36, 2270065), (42, 1945770), (45, 1816052), (60, 1362039), (63, 1297180), (70, 1167462), (79, 1034460), (84, 972885), (90, 908026), (105, 778308), (126, 648590), (140, 583731), (158, 517230), (180, 454013), (210, 389154), (237, 344820), (252, 324295), (315, 259436), (316, 258615), (395, 206892), (420, 194577), (474, 172410), (553, 147780), (630, 129718), (711, 114940), (790, 103446), (821, 99540), (948, 86205), (1106, 73890), (1185, 68964), (1260, 64859), (1422, 57470), (1580, 51723), (1642, 49770), (1659, 49260), (2212, 36945), (2370, 34482), (2463, 33180), (2765, 29556), (2844, 28735), (3284, 24885), (3318, 24630), (3555, 22988), (4105, 19908), (4740, 17241), (4926, 16590), (4977, 16420), (5530, 14778), (5747, 14220), (6636, 12315), (7110, 11494), (7389, 11060), (8210, 9954), (8295, 9852)]