640026730984

素因数分解:

$2^3\times {\mathrm{139}}^1\times {\mathrm{149}}^1\times {\mathrm{1621}}^1\times {\mathrm{2383}}^1$

素因数の和:4298

約数の個数: 64

約数和(自身を含む): 1218057120000

約数和(自身を除く): 578030389016

約数列:

[1, 2, 4, 8, 139, 149, 278, 298, 556, 596, 1112, 1192, 1621, 2383, 3242, 4766, 6484, 9532, 12968, 19064, 20711, 41422, 82844, 165688, 225319, 241529, 331237, 355067, 450638, 483058, 662474, 710134, 901276, 966116, 1324948, 1420268, 1802552, 1932232, 2649896, 2840536, 3862843, 7725686, 15451372, 30902744, 33572531, 49354313, 67145062, 98708626, 134290124, 197417252, 268580248, 394834504, 536935177, 575563607, 1073870354, 1151127214, 2147740708, 2302254428, 4295481416, 4604508856, 80003341373, 160006682746, 320013365492, 640026730984]

約数ペア:

[(1, 640026730984), (2, 320013365492), (4, 160006682746), (8, 80003341373), (139, 4604508856), (149, 4295481416), (278, 2302254428), (298, 2147740708), (556, 1151127214), (596, 1073870354), (1112, 575563607), (1192, 536935177), (1621, 394834504), (2383, 268580248), (3242, 197417252), (4766, 134290124), (6484, 98708626), (9532, 67145062), (12968, 49354313), (19064, 33572531), (20711, 30902744), (41422, 15451372), (82844, 7725686), (165688, 3862843), (225319, 2840536), (241529, 2649896), (331237, 1932232), (355067, 1802552), (450638, 1420268), (483058, 1324948), (662474, 966116), (710134, 901276)]