245405440

素因数分解:

$2^8\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{449}}^1$

素因数の和:538

約数の個数: 144

約数和(自身を含む): 684331200

約数和(自身を除く): 438925760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 61, 64, 70, 80, 112, 122, 128, 140, 160, 224, 244, 256, 280, 305, 320, 427, 448, 449, 488, 560, 610, 640, 854, 896, 898, 976, 1120, 1220, 1280, 1708, 1792, 1796, 1952, 2135, 2240, 2245, 2440, 3143, 3416, 3592, 3904, 4270, 4480, 4490, 4880, 6286, 6832, 7184, 7808, 8540, 8960, 8980, 9760, 12572, 13664, 14368, 15616, 15715, 17080, 17960, 19520, 25144, 27328, 27389, 28736, 31430, 34160, 35920, 39040, 50288, 54656, 54778, 57472, 62860, 68320, 71840, 78080, 100576, 109312, 109556, 114944, 125720, 136640, 136945, 143680, 191723, 201152, 219112, 251440, 273280, 273890, 287360, 383446, 402304, 438224, 502880, 546560, 547780, 574720, 766892, 804608, 876448, 958615, 1005760, 1095560, 1533784, 1752896, 1917230, 2011520, 2191120, 3067568, 3505792, 3834460, 4023040, 4382240, 6135136, 7011584, 7668920, 8764480, 12270272, 15337840, 17528960, 24540544, 30675680, 35057920, 49081088, 61351360, 122702720, 245405440]

約数ペア:

[(1, 245405440), (2, 122702720), (4, 61351360), (5, 49081088), (7, 35057920), (8, 30675680), (10, 24540544), (14, 17528960), (16, 15337840), (20, 12270272), (28, 8764480), (32, 7668920), (35, 7011584), (40, 6135136), (56, 4382240), (61, 4023040), (64, 3834460), (70, 3505792), (80, 3067568), (112, 2191120), (122, 2011520), (128, 1917230), (140, 1752896), (160, 1533784), (224, 1095560), (244, 1005760), (256, 958615), (280, 876448), (305, 804608), (320, 766892), (427, 574720), (448, 547780), (449, 546560), (488, 502880), (560, 438224), (610, 402304), (640, 383446), (854, 287360), (896, 273890), (898, 273280), (976, 251440), (1120, 219112), (1220, 201152), (1280, 191723), (1708, 143680), (1792, 136945), (1796, 136640), (1952, 125720), (2135, 114944), (2240, 109556), (2245, 109312), (2440, 100576), (3143, 78080), (3416, 71840), (3592, 68320), (3904, 62860), (4270, 57472), (4480, 54778), (4490, 54656), (4880, 50288), (6286, 39040), (6832, 35920), (7184, 34160), (7808, 31430), (8540, 28736), (8960, 27389), (8980, 27328), (9760, 25144), (12572, 19520), (13664, 17960), (14368, 17080), (15616, 15715)]