81525780

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{727}}^1$

素因数の和:838

約数の個数: 144

約数和(自身を含む): 286191360

約数和(自身を除く): 204665580

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, 84, 89, 90, 105, 126, 140, 178, 180, 210, 252, 267, 315, 356, 420, 445, 534, 623, 630, 727, 801, 890, 1068, 1246, 1260, 1335, 1454, 1602, 1780, 1869, 2181, 2492, 2670, 2908, 3115, 3204, 3635, 3738, 4005, 4362, 5089, 5340, 5607, 6230, 6543, 7270, 7476, 8010, 8724, 9345, 10178, 10905, 11214, 12460, 13086, 14540, 15267, 16020, 18690, 20356, 21810, 22428, 25445, 26172, 28035, 30534, 32715, 37380, 43620, 45801, 50890, 56070, 61068, 64703, 65430, 76335, 91602, 101780, 112140, 129406, 130860, 152670, 183204, 194109, 229005, 258812, 305340, 323515, 388218, 452921, 458010, 582327, 647030, 776436, 905842, 916020, 970545, 1164654, 1294060, 1358763, 1811684, 1941090, 2264605, 2329308, 2717526, 2911635, 3882180, 4076289, 4529210, 5435052, 5823270, 6793815, 8152578, 9058420, 11646540, 13587630, 16305156, 20381445, 27175260, 40762890, 81525780]

約数ペア:

[(1, 81525780), (2, 40762890), (3, 27175260), (4, 20381445), (5, 16305156), (6, 13587630), (7, 11646540), (9, 9058420), (10, 8152578), (12, 6793815), (14, 5823270), (15, 5435052), (18, 4529210), (20, 4076289), (21, 3882180), (28, 2911635), (30, 2717526), (35, 2329308), (36, 2264605), (42, 1941090), (45, 1811684), (60, 1358763), (63, 1294060), (70, 1164654), (84, 970545), (89, 916020), (90, 905842), (105, 776436), (126, 647030), (140, 582327), (178, 458010), (180, 452921), (210, 388218), (252, 323515), (267, 305340), (315, 258812), (356, 229005), (420, 194109), (445, 183204), (534, 152670), (623, 130860), (630, 129406), (727, 112140), (801, 101780), (890, 91602), (1068, 76335), (1246, 65430), (1260, 64703), (1335, 61068), (1454, 56070), (1602, 50890), (1780, 45801), (1869, 43620), (2181, 37380), (2492, 32715), (2670, 30534), (2908, 28035), (3115, 26172), (3204, 25445), (3635, 22428), (3738, 21810), (4005, 20356), (4362, 18690), (5089, 16020), (5340, 15267), (5607, 14540), (6230, 13086), (6543, 12460), (7270, 11214), (7476, 10905), (8010, 10178), (8724, 9345)]