21044120

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{59}}^1\times {\mathrm{241}}^1$

素因数の和:348

約数の個数: 64

約数和(自身を含む): 49658400

約数和(自身を除く): 28614280

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 59, 74, 118, 148, 185, 236, 241, 295, 296, 370, 472, 482, 590, 740, 964, 1180, 1205, 1480, 1928, 2183, 2360, 2410, 4366, 4820, 8732, 8917, 9640, 10915, 14219, 17464, 17834, 21830, 28438, 35668, 43660, 44585, 56876, 71095, 71336, 87320, 89170, 113752, 142190, 178340, 284380, 356680, 526103, 568760, 1052206, 2104412, 2630515, 4208824, 5261030, 10522060, 21044120]

約数ペア:

[(1, 21044120), (2, 10522060), (4, 5261030), (5, 4208824), (8, 2630515), (10, 2104412), (20, 1052206), (37, 568760), (40, 526103), (59, 356680), (74, 284380), (118, 178340), (148, 142190), (185, 113752), (236, 89170), (241, 87320), (295, 71336), (296, 71095), (370, 56876), (472, 44585), (482, 43660), (590, 35668), (740, 28438), (964, 21830), (1180, 17834), (1205, 17464), (1480, 14219), (1928, 10915), (2183, 9640), (2360, 8917), (2410, 8732), (4366, 4820)]