201621880

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{59}}^1\times {\mathrm{2309}}^1$

素因数の和:2416

約数の個数: 64

約数和(自身を含む): 474012000

約数和(自身を除く): 272390120

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 59, 74, 118, 148, 185, 236, 295, 296, 370, 472, 590, 740, 1180, 1480, 2183, 2309, 2360, 4366, 4618, 8732, 9236, 10915, 11545, 17464, 18472, 21830, 23090, 43660, 46180, 85433, 87320, 92360, 136231, 170866, 272462, 341732, 427165, 544924, 681155, 683464, 854330, 1089848, 1362310, 1708660, 2724620, 3417320, 5040547, 5449240, 10081094, 20162188, 25202735, 40324376, 50405470, 100810940, 201621880]

約数ペア:

[(1, 201621880), (2, 100810940), (4, 50405470), (5, 40324376), (8, 25202735), (10, 20162188), (20, 10081094), (37, 5449240), (40, 5040547), (59, 3417320), (74, 2724620), (118, 1708660), (148, 1362310), (185, 1089848), (236, 854330), (295, 683464), (296, 681155), (370, 544924), (472, 427165), (590, 341732), (740, 272462), (1180, 170866), (1480, 136231), (2183, 92360), (2309, 87320), (2360, 85433), (4366, 46180), (4618, 43660), (8732, 23090), (9236, 21830), (10915, 18472), (11545, 17464)]