1808800

素因数分解:

$2^5\times 5^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1$

素因数の和:63

約数の個数: 144

約数和(自身を含む): 5624640

約数和(自身を除く): 3815840

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 17, 19, 20, 25, 28, 32, 34, 35, 38, 40, 50, 56, 68, 70, 76, 80, 85, 95, 100, 112, 119, 133, 136, 140, 152, 160, 170, 175, 190, 200, 224, 238, 266, 272, 280, 304, 323, 340, 350, 380, 400, 425, 475, 476, 532, 544, 560, 595, 608, 646, 665, 680, 700, 760, 800, 850, 950, 952, 1064, 1120, 1190, 1292, 1330, 1360, 1400, 1520, 1615, 1700, 1900, 1904, 2128, 2261, 2380, 2584, 2660, 2720, 2800, 2975, 3040, 3230, 3325, 3400, 3800, 3808, 4256, 4522, 4760, 5168, 5320, 5600, 5950, 6460, 6650, 6800, 7600, 8075, 9044, 9520, 10336, 10640, 11305, 11900, 12920, 13300, 13600, 15200, 16150, 18088, 19040, 21280, 22610, 23800, 25840, 26600, 32300, 36176, 45220, 47600, 51680, 53200, 56525, 64600, 72352, 90440, 95200, 106400, 113050, 129200, 180880, 226100, 258400, 361760, 452200, 904400, 1808800]

約数ペア:

[(1, 1808800), (2, 904400), (4, 452200), (5, 361760), (7, 258400), (8, 226100), (10, 180880), (14, 129200), (16, 113050), (17, 106400), (19, 95200), (20, 90440), (25, 72352), (28, 64600), (32, 56525), (34, 53200), (35, 51680), (38, 47600), (40, 45220), (50, 36176), (56, 32300), (68, 26600), (70, 25840), (76, 23800), (80, 22610), (85, 21280), (95, 19040), (100, 18088), (112, 16150), (119, 15200), (133, 13600), (136, 13300), (140, 12920), (152, 11900), (160, 11305), (170, 10640), (175, 10336), (190, 9520), (200, 9044), (224, 8075), (238, 7600), (266, 6800), (272, 6650), (280, 6460), (304, 5950), (323, 5600), (340, 5320), (350, 5168), (380, 4760), (400, 4522), (425, 4256), (475, 3808), (476, 3800), (532, 3400), (544, 3325), (560, 3230), (595, 3040), (608, 2975), (646, 2800), (665, 2720), (680, 2660), (700, 2584), (760, 2380), (800, 2261), (850, 2128), (950, 1904), (952, 1900), (1064, 1700), (1120, 1615), (1190, 1520), (1292, 1400), (1330, 1360)]