20165979904

素因数分解:

$2^8\times 7^1\times {\mathrm{17}}^1\times {\mathrm{661961}}^1$

素因数の和:662001

約数の個数: 72

約数和(自身を含む): 48709811808

約数和(自身を除く): 28543831904

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 28, 32, 34, 56, 64, 68, 112, 119, 128, 136, 224, 238, 256, 272, 448, 476, 544, 896, 952, 1088, 1792, 1904, 2176, 3808, 4352, 7616, 15232, 30464, 661961, 1323922, 2647844, 4633727, 5295688, 9267454, 10591376, 11253337, 18534908, 21182752, 22506674, 37069816, 42365504, 45013348, 74139632, 78773359, 84731008, 90026696, 148279264, 157546718, 169462016, 180053392, 296558528, 315093436, 360106784, 593117056, 630186872, 720213568, 1186234112, 1260373744, 1440427136, 2520747488, 2880854272, 5041494976, 10082989952, 20165979904]

約数ペア:

[(1, 20165979904), (2, 10082989952), (4, 5041494976), (7, 2880854272), (8, 2520747488), (14, 1440427136), (16, 1260373744), (17, 1186234112), (28, 720213568), (32, 630186872), (34, 593117056), (56, 360106784), (64, 315093436), (68, 296558528), (112, 180053392), (119, 169462016), (128, 157546718), (136, 148279264), (224, 90026696), (238, 84731008), (256, 78773359), (272, 74139632), (448, 45013348), (476, 42365504), (544, 37069816), (896, 22506674), (952, 21182752), (1088, 18534908), (1792, 11253337), (1904, 10591376), (2176, 9267454), (3808, 5295688), (4352, 4633727), (7616, 2647844), (15232, 1323922), (30464, 661961)]