289704610

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{71887}}^1$

素因数の和:71938

約数の個数: 32

約数和(自身を含む): 579704832

約数和(自身を除く): 290000222

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 130, 155, 310, 403, 806, 2015, 4030, 71887, 143774, 359435, 718870, 934531, 1869062, 2228497, 4456994, 4672655, 9345310, 11142485, 22284970, 28970461, 57940922, 144852305, 289704610]

約数ペア:

[(1, 289704610), (2, 144852305), (5, 57940922), (10, 28970461), (13, 22284970), (26, 11142485), (31, 9345310), (62, 4672655), (65, 4456994), (130, 2228497), (155, 1869062), (310, 934531), (403, 718870), (806, 359435), (2015, 143774), (4030, 71887)]