638528060

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{101}}^1\times {\mathrm{127}}^1\times {\mathrm{131}}^1$

素因数の和:387

約数の個数: 96

約数和(自身を含む): 1447649280

約数和(自身を除く): 809121220

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 101, 127, 131, 190, 202, 254, 262, 380, 404, 505, 508, 524, 635, 655, 1010, 1270, 1310, 1919, 2020, 2413, 2489, 2540, 2620, 3838, 4826, 4978, 7676, 9595, 9652, 9956, 12065, 12445, 12827, 13231, 16637, 19190, 24130, 24890, 25654, 26462, 33274, 38380, 48260, 49780, 51308, 52924, 64135, 66155, 66548, 83185, 128270, 132310, 166370, 243713, 251389, 256540, 264620, 316103, 332740, 487426, 502778, 632206, 974852, 1005556, 1218565, 1256945, 1264412, 1580515, 1680337, 2437130, 2513890, 3161030, 3360674, 4874260, 5027780, 6322060, 6721348, 8401685, 16803370, 31926403, 33606740, 63852806, 127705612, 159632015, 319264030, 638528060]

約数ペア:

[(1, 638528060), (2, 319264030), (4, 159632015), (5, 127705612), (10, 63852806), (19, 33606740), (20, 31926403), (38, 16803370), (76, 8401685), (95, 6721348), (101, 6322060), (127, 5027780), (131, 4874260), (190, 3360674), (202, 3161030), (254, 2513890), (262, 2437130), (380, 1680337), (404, 1580515), (505, 1264412), (508, 1256945), (524, 1218565), (635, 1005556), (655, 974852), (1010, 632206), (1270, 502778), (1310, 487426), (1919, 332740), (2020, 316103), (2413, 264620), (2489, 256540), (2540, 251389), (2620, 243713), (3838, 166370), (4826, 132310), (4978, 128270), (7676, 83185), (9595, 66548), (9652, 66155), (9956, 64135), (12065, 52924), (12445, 51308), (12827, 49780), (13231, 48260), (16637, 38380), (19190, 33274), (24130, 26462), (24890, 25654)]