2000180

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{157}}^1$

素因数の和:193

約数の個数: 72

約数和(自身を含む): 5295528

約数和(自身を除く): 3295348

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 49, 52, 65, 70, 91, 98, 130, 140, 157, 182, 196, 245, 260, 314, 364, 455, 490, 628, 637, 785, 910, 980, 1099, 1274, 1570, 1820, 2041, 2198, 2548, 3140, 3185, 4082, 4396, 5495, 6370, 7693, 8164, 10205, 10990, 12740, 14287, 15386, 20410, 21980, 28574, 30772, 38465, 40820, 57148, 71435, 76930, 100009, 142870, 153860, 200018, 285740, 400036, 500045, 1000090, 2000180]

約数ペア:

[(1, 2000180), (2, 1000090), (4, 500045), (5, 400036), (7, 285740), (10, 200018), (13, 153860), (14, 142870), (20, 100009), (26, 76930), (28, 71435), (35, 57148), (49, 40820), (52, 38465), (65, 30772), (70, 28574), (91, 21980), (98, 20410), (130, 15386), (140, 14287), (157, 12740), (182, 10990), (196, 10205), (245, 8164), (260, 7693), (314, 6370), (364, 5495), (455, 4396), (490, 4082), (628, 3185), (637, 3140), (785, 2548), (910, 2198), (980, 2041), (1099, 1820), (1274, 1570)]