131248640

素因数分解:

$2^9\times 5^1\times {\mathrm{167}}^1\times {\mathrm{307}}^1$

素因数の和:497

約数の個数: 80

約数和(自身を含む): 317604672

約数和(自身を除く): 186356032

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 167, 256, 307, 320, 334, 512, 614, 640, 668, 835, 1228, 1280, 1336, 1535, 1670, 2456, 2560, 2672, 3070, 3340, 4912, 5344, 6140, 6680, 9824, 10688, 12280, 13360, 19648, 21376, 24560, 26720, 39296, 42752, 49120, 51269, 53440, 78592, 85504, 98240, 102538, 106880, 157184, 196480, 205076, 213760, 256345, 392960, 410152, 427520, 512690, 785920, 820304, 1025380, 1640608, 2050760, 3281216, 4101520, 6562432, 8203040, 13124864, 16406080, 26249728, 32812160, 65624320, 131248640]

約数ペア:

[(1, 131248640), (2, 65624320), (4, 32812160), (5, 26249728), (8, 16406080), (10, 13124864), (16, 8203040), (20, 6562432), (32, 4101520), (40, 3281216), (64, 2050760), (80, 1640608), (128, 1025380), (160, 820304), (167, 785920), (256, 512690), (307, 427520), (320, 410152), (334, 392960), (512, 256345), (614, 213760), (640, 205076), (668, 196480), (835, 157184), (1228, 106880), (1280, 102538), (1336, 98240), (1535, 85504), (1670, 78592), (2456, 53440), (2560, 51269), (2672, 49120), (3070, 42752), (3340, 39296), (4912, 26720), (5344, 24560), (6140, 21376), (6680, 19648), (9824, 13360), (10688, 12280)]