21989520

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{4363}}^1$

素因数の和:4389

約数の個数: 120

約数和(自身を含む): 84417216

約数和(自身を除く): 62427696

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, 420, 504, 560, 630, 720, 840, 1008, 1260, 1680, 2520, 4363, 5040, 8726, 13089, 17452, 21815, 26178, 30541, 34904, 39267, 43630, 52356, 61082, 65445, 69808, 78534, 87260, 91623, 104712, 122164, 130890, 152705, 157068, 174520, 183246, 196335, 209424, 244328, 261780, 274869, 305410, 314136, 349040, 366492, 392670, 458115, 488656, 523560, 549738, 610820, 628272, 732984, 785340, 916230, 1047120, 1099476, 1221640, 1374345, 1465968, 1570680, 1832460, 2198952, 2443280, 2748690, 3141360, 3664920, 4397904, 5497380, 7329840, 10994760, 21989520]

約数ペア:

[(1, 21989520), (2, 10994760), (3, 7329840), (4, 5497380), (5, 4397904), (6, 3664920), (7, 3141360), (8, 2748690), (9, 2443280), (10, 2198952), (12, 1832460), (14, 1570680), (15, 1465968), (16, 1374345), (18, 1221640), (20, 1099476), (21, 1047120), (24, 916230), (28, 785340), (30, 732984), (35, 628272), (36, 610820), (40, 549738), (42, 523560), (45, 488656), (48, 458115), (56, 392670), (60, 366492), (63, 349040), (70, 314136), (72, 305410), (80, 274869), (84, 261780), (90, 244328), (105, 209424), (112, 196335), (120, 183246), (126, 174520), (140, 157068), (144, 152705), (168, 130890), (180, 122164), (210, 104712), (240, 91623), (252, 87260), (280, 78534), (315, 69808), (336, 65445), (360, 61082), (420, 52356), (504, 43630), (560, 39267), (630, 34904), (720, 30541), (840, 26178), (1008, 21815), (1260, 17452), (1680, 13089), (2520, 8726), (4363, 5040)]