520174780

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{997}}^1\times {\mathrm{1373}}^1$

素因数の和:2398

約数の個数: 48

約数和(自身を含む): 1151851680

約数和(自身を除く): 631676900

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 997, 1373, 1994, 2746, 3988, 4985, 5492, 6865, 9970, 13730, 18943, 19940, 26087, 27460, 37886, 52174, 75772, 94715, 104348, 130435, 189430, 260870, 378860, 521740, 1368881, 2737762, 5475524, 6844405, 13688810, 26008739, 27377620, 52017478, 104034956, 130043695, 260087390, 520174780]

約数ペア:

[(1, 520174780), (2, 260087390), (4, 130043695), (5, 104034956), (10, 52017478), (19, 27377620), (20, 26008739), (38, 13688810), (76, 6844405), (95, 5475524), (190, 2737762), (380, 1368881), (997, 521740), (1373, 378860), (1994, 260870), (2746, 189430), (3988, 130435), (4985, 104348), (5492, 94715), (6865, 75772), (9970, 52174), (13730, 37886), (18943, 27460), (19940, 26087)]