131263360

素因数分解:

$2^7\times 5^1\times {\mathrm{317}}^1\times {\mathrm{647}}^1$

素因数の和:983

約数の個数: 64

約数和(自身を含む): 315277920

約数和(自身を除く): 184014560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 317, 320, 634, 640, 647, 1268, 1294, 1585, 2536, 2588, 3170, 3235, 5072, 5176, 6340, 6470, 10144, 10352, 12680, 12940, 20288, 20704, 25360, 25880, 40576, 41408, 50720, 51760, 82816, 101440, 103520, 202880, 205099, 207040, 410198, 414080, 820396, 1025495, 1640792, 2050990, 3281584, 4101980, 6563168, 8203960, 13126336, 16407920, 26252672, 32815840, 65631680, 131263360]

約数ペア:

[(1, 131263360), (2, 65631680), (4, 32815840), (5, 26252672), (8, 16407920), (10, 13126336), (16, 8203960), (20, 6563168), (32, 4101980), (40, 3281584), (64, 2050990), (80, 1640792), (128, 1025495), (160, 820396), (317, 414080), (320, 410198), (634, 207040), (640, 205099), (647, 202880), (1268, 103520), (1294, 101440), (1585, 82816), (2536, 51760), (2588, 50720), (3170, 41408), (3235, 40576), (5072, 25880), (5176, 25360), (6340, 20704), (6470, 20288), (10144, 12940), (10352, 12680)]