20393800

素因数分解:

$2^3\times 5^2\times 7^2\times {\mathrm{2081}}^1$

素因数の和:2111

約数の個数: 72

約数和(自身を含む): 55183410

約数和(自身を除く): 34789610

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 25, 28, 35, 40, 49, 50, 56, 70, 98, 100, 140, 175, 196, 200, 245, 280, 350, 392, 490, 700, 980, 1225, 1400, 1960, 2081, 2450, 4162, 4900, 8324, 9800, 10405, 14567, 16648, 20810, 29134, 41620, 52025, 58268, 72835, 83240, 101969, 104050, 116536, 145670, 203938, 208100, 291340, 364175, 407876, 416200, 509845, 582680, 728350, 815752, 1019690, 1456700, 2039380, 2549225, 2913400, 4078760, 5098450, 10196900, 20393800]

約数ペア:

[(1, 20393800), (2, 10196900), (4, 5098450), (5, 4078760), (7, 2913400), (8, 2549225), (10, 2039380), (14, 1456700), (20, 1019690), (25, 815752), (28, 728350), (35, 582680), (40, 509845), (49, 416200), (50, 407876), (56, 364175), (70, 291340), (98, 208100), (100, 203938), (140, 145670), (175, 116536), (196, 104050), (200, 101969), (245, 83240), (280, 72835), (350, 58268), (392, 52025), (490, 41620), (700, 29134), (980, 20810), (1225, 16648), (1400, 14567), (1960, 10405), (2081, 9800), (2450, 8324), (4162, 4900)]