20379940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{8563}}^1$

素因数の和:8596

約数の個数: 48

約数和(自身を含む): 51795072

約数和(自身を除く): 31415132

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 68, 70, 85, 119, 140, 170, 238, 340, 476, 595, 1190, 2380, 8563, 17126, 34252, 42815, 59941, 85630, 119882, 145571, 171260, 239764, 291142, 299705, 582284, 599410, 727855, 1018997, 1198820, 1455710, 2037994, 2911420, 4075988, 5094985, 10189970, 20379940]

約数ペア:

[(1, 20379940), (2, 10189970), (4, 5094985), (5, 4075988), (7, 2911420), (10, 2037994), (14, 1455710), (17, 1198820), (20, 1018997), (28, 727855), (34, 599410), (35, 582284), (68, 299705), (70, 291142), (85, 239764), (119, 171260), (140, 145571), (170, 119882), (238, 85630), (340, 59941), (476, 42815), (595, 34252), (1190, 17126), (2380, 8563)]