201781720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{19477}}^1$

素因数の和:19532

約数の個数: 64

約数和(自身を含む): 532918080

約数和(自身を除く): 331136360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 37, 40, 56, 70, 74, 140, 148, 185, 259, 280, 296, 370, 518, 740, 1036, 1295, 1480, 2072, 2590, 5180, 10360, 19477, 38954, 77908, 97385, 136339, 155816, 194770, 272678, 389540, 545356, 681695, 720649, 779080, 1090712, 1363390, 1441298, 2726780, 2882596, 3603245, 5044543, 5453560, 5765192, 7206490, 10089086, 14412980, 20178172, 25222715, 28825960, 40356344, 50445430, 100890860, 201781720]

約数ペア:

[(1, 201781720), (2, 100890860), (4, 50445430), (5, 40356344), (7, 28825960), (8, 25222715), (10, 20178172), (14, 14412980), (20, 10089086), (28, 7206490), (35, 5765192), (37, 5453560), (40, 5044543), (56, 3603245), (70, 2882596), (74, 2726780), (140, 1441298), (148, 1363390), (185, 1090712), (259, 779080), (280, 720649), (296, 681695), (370, 545356), (518, 389540), (740, 272678), (1036, 194770), (1295, 155816), (1480, 136339), (2072, 97385), (2590, 77908), (5180, 38954), (10360, 19477)]