54820520

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{97}}^1\times {\mathrm{199}}^1$

素因数の和:378

約数の個数: 64

約数和(自身を含む): 127008000

約数和(自身を除く): 72187480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 97, 142, 194, 199, 284, 355, 388, 398, 485, 568, 710, 776, 796, 970, 995, 1420, 1592, 1940, 1990, 2840, 3880, 3980, 6887, 7960, 13774, 14129, 19303, 27548, 28258, 34435, 38606, 55096, 56516, 68870, 70645, 77212, 96515, 113032, 137740, 141290, 154424, 193030, 275480, 282580, 386060, 565160, 772120, 1370513, 2741026, 5482052, 6852565, 10964104, 13705130, 27410260, 54820520]

約数ペア:

[(1, 54820520), (2, 27410260), (4, 13705130), (5, 10964104), (8, 6852565), (10, 5482052), (20, 2741026), (40, 1370513), (71, 772120), (97, 565160), (142, 386060), (194, 282580), (199, 275480), (284, 193030), (355, 154424), (388, 141290), (398, 137740), (485, 113032), (568, 96515), (710, 77212), (776, 70645), (796, 68870), (970, 56516), (995, 55096), (1420, 38606), (1592, 34435), (1940, 28258), (1990, 27548), (2840, 19303), (3880, 14129), (3980, 13774), (6887, 7960)]