28728280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{59}}^1$

素因数の和:161

約数の個数: 128

約数和(自身を含む): 78796800

約数和(自身を除く): 50068520

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 37, 40, 47, 56, 59, 70, 74, 94, 118, 140, 148, 185, 188, 235, 236, 259, 280, 295, 296, 329, 370, 376, 413, 470, 472, 518, 590, 658, 740, 826, 940, 1036, 1180, 1295, 1316, 1480, 1645, 1652, 1739, 1880, 2065, 2072, 2183, 2360, 2590, 2632, 2773, 3290, 3304, 3478, 4130, 4366, 5180, 5546, 6580, 6956, 8260, 8695, 8732, 10360, 10915, 11092, 12173, 13160, 13865, 13912, 15281, 16520, 17390, 17464, 19411, 21830, 22184, 24346, 27730, 30562, 34780, 38822, 43660, 48692, 55460, 60865, 61124, 69560, 76405, 77644, 87320, 97055, 97384, 102601, 110920, 121730, 122248, 152810, 155288, 194110, 205202, 243460, 305620, 388220, 410404, 486920, 513005, 611240, 718207, 776440, 820808, 1026010, 1436414, 2052020, 2872828, 3591035, 4104040, 5745656, 7182070, 14364140, 28728280]

約数ペア:

[(1, 28728280), (2, 14364140), (4, 7182070), (5, 5745656), (7, 4104040), (8, 3591035), (10, 2872828), (14, 2052020), (20, 1436414), (28, 1026010), (35, 820808), (37, 776440), (40, 718207), (47, 611240), (56, 513005), (59, 486920), (70, 410404), (74, 388220), (94, 305620), (118, 243460), (140, 205202), (148, 194110), (185, 155288), (188, 152810), (235, 122248), (236, 121730), (259, 110920), (280, 102601), (295, 97384), (296, 97055), (329, 87320), (370, 77644), (376, 76405), (413, 69560), (470, 61124), (472, 60865), (518, 55460), (590, 48692), (658, 43660), (740, 38822), (826, 34780), (940, 30562), (1036, 27730), (1180, 24346), (1295, 22184), (1316, 21830), (1480, 19411), (1645, 17464), (1652, 17390), (1739, 16520), (1880, 15281), (2065, 13912), (2072, 13865), (2183, 13160), (2360, 12173), (2590, 11092), (2632, 10915), (2773, 10360), (3290, 8732), (3304, 8695), (3478, 8260), (4130, 6956), (4366, 6580), (5180, 5546)]