2021040

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{401}}^1$

素因数の和:427

約数の個数: 120

約数和(自身を含む): 7776288

約数和(自身を除く): 5755248

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 48, 56, 60, 63, 70, 72, 80, 84, 90, 105, 112, 120, 126, 140, 144, 168, 180, 210, 240, 252, 280, 315, 336, 360, 401, 420, 504, 560, 630, 720, 802, 840, 1008, 1203, 1260, 1604, 1680, 2005, 2406, 2520, 2807, 3208, 3609, 4010, 4812, 5040, 5614, 6015, 6416, 7218, 8020, 8421, 9624, 11228, 12030, 14035, 14436, 16040, 16842, 18045, 19248, 22456, 24060, 25263, 28070, 28872, 32080, 33684, 36090, 42105, 44912, 48120, 50526, 56140, 57744, 67368, 72180, 84210, 96240, 101052, 112280, 126315, 134736, 144360, 168420, 202104, 224560, 252630, 288720, 336840, 404208, 505260, 673680, 1010520, 2021040]

約数ペア:

[(1, 2021040), (2, 1010520), (3, 673680), (4, 505260), (5, 404208), (6, 336840), (7, 288720), (8, 252630), (9, 224560), (10, 202104), (12, 168420), (14, 144360), (15, 134736), (16, 126315), (18, 112280), (20, 101052), (21, 96240), (24, 84210), (28, 72180), (30, 67368), (35, 57744), (36, 56140), (40, 50526), (42, 48120), (45, 44912), (48, 42105), (56, 36090), (60, 33684), (63, 32080), (70, 28872), (72, 28070), (80, 25263), (84, 24060), (90, 22456), (105, 19248), (112, 18045), (120, 16842), (126, 16040), (140, 14436), (144, 14035), (168, 12030), (180, 11228), (210, 9624), (240, 8421), (252, 8020), (280, 7218), (315, 6416), (336, 6015), (360, 5614), (401, 5040), (420, 4812), (504, 4010), (560, 3609), (630, 3208), (720, 2807), (802, 2520), (840, 2406), (1008, 2005), (1203, 1680), (1260, 1604)]