28688640

素因数分解:

$2^8\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{241}}^1$

素因数の和:296

約数の個数: 144

約数和(自身を含む): 94972416

約数和(自身を除く): 66283776

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 31, 32, 40, 48, 60, 62, 64, 80, 93, 96, 120, 124, 128, 155, 160, 186, 192, 240, 241, 248, 256, 310, 320, 372, 384, 465, 480, 482, 496, 620, 640, 723, 744, 768, 930, 960, 964, 992, 1205, 1240, 1280, 1446, 1488, 1860, 1920, 1928, 1984, 2410, 2480, 2892, 2976, 3615, 3720, 3840, 3856, 3968, 4820, 4960, 5784, 5952, 7230, 7440, 7471, 7712, 7936, 9640, 9920, 11568, 11904, 14460, 14880, 14942, 15424, 19280, 19840, 22413, 23136, 23808, 28920, 29760, 29884, 30848, 37355, 38560, 39680, 44826, 46272, 57840, 59520, 59768, 61696, 74710, 77120, 89652, 92544, 112065, 115680, 119040, 119536, 149420, 154240, 179304, 185088, 224130, 231360, 239072, 298840, 308480, 358608, 448260, 462720, 478144, 597680, 717216, 896520, 925440, 956288, 1195360, 1434432, 1793040, 1912576, 2390720, 2868864, 3586080, 4781440, 5737728, 7172160, 9562880, 14344320, 28688640]

約数ペア:

[(1, 28688640), (2, 14344320), (3, 9562880), (4, 7172160), (5, 5737728), (6, 4781440), (8, 3586080), (10, 2868864), (12, 2390720), (15, 1912576), (16, 1793040), (20, 1434432), (24, 1195360), (30, 956288), (31, 925440), (32, 896520), (40, 717216), (48, 597680), (60, 478144), (62, 462720), (64, 448260), (80, 358608), (93, 308480), (96, 298840), (120, 239072), (124, 231360), (128, 224130), (155, 185088), (160, 179304), (186, 154240), (192, 149420), (240, 119536), (241, 119040), (248, 115680), (256, 112065), (310, 92544), (320, 89652), (372, 77120), (384, 74710), (465, 61696), (480, 59768), (482, 59520), (496, 57840), (620, 46272), (640, 44826), (723, 39680), (744, 38560), (768, 37355), (930, 30848), (960, 29884), (964, 29760), (992, 28920), (1205, 23808), (1240, 23136), (1280, 22413), (1446, 19840), (1488, 19280), (1860, 15424), (1920, 14942), (1928, 14880), (1984, 14460), (2410, 11904), (2480, 11568), (2892, 9920), (2976, 9640), (3615, 7936), (3720, 7712), (3840, 7471), (3856, 7440), (3968, 7230), (4820, 5952), (4960, 5784)]