28250320

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{827}}^1$

素因数の和:908

約数の個数: 80

約数和(自身を含む): 76387968

約数和(自身を除く): 48137648

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 61, 70, 80, 112, 122, 140, 244, 280, 305, 427, 488, 560, 610, 827, 854, 976, 1220, 1654, 1708, 2135, 2440, 3308, 3416, 4135, 4270, 4880, 5789, 6616, 6832, 8270, 8540, 11578, 13232, 16540, 17080, 23156, 28945, 33080, 34160, 46312, 50447, 57890, 66160, 92624, 100894, 115780, 201788, 231560, 252235, 353129, 403576, 463120, 504470, 706258, 807152, 1008940, 1412516, 1765645, 2017880, 2825032, 3531290, 4035760, 5650064, 7062580, 14125160, 28250320]

約数ペア:

[(1, 28250320), (2, 14125160), (4, 7062580), (5, 5650064), (7, 4035760), (8, 3531290), (10, 2825032), (14, 2017880), (16, 1765645), (20, 1412516), (28, 1008940), (35, 807152), (40, 706258), (56, 504470), (61, 463120), (70, 403576), (80, 353129), (112, 252235), (122, 231560), (140, 201788), (244, 115780), (280, 100894), (305, 92624), (427, 66160), (488, 57890), (560, 50447), (610, 46312), (827, 34160), (854, 33080), (976, 28945), (1220, 23156), (1654, 17080), (1708, 16540), (2135, 13232), (2440, 11578), (3308, 8540), (3416, 8270), (4135, 6832), (4270, 6616), (4880, 5789)]