20090642275

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{179}}^1\times {\mathrm{21481}}^1$

素因数の和:21700

約数の個数: 48

約数和(自身を含む): 28768694400

約数和(自身を除く): 8678052125

約数列:

[1, 5, 11, 19, 25, 55, 95, 179, 209, 275, 475, 895, 1045, 1969, 3401, 4475, 5225, 9845, 17005, 21481, 37411, 49225, 85025, 107405, 187055, 236291, 408139, 537025, 935275, 1181455, 2040695, 3845099, 4489529, 5907275, 10203475, 19225495, 22447645, 42296089, 73056881, 96127475, 112238225, 211480445, 365284405, 803625691, 1057402225, 1826422025, 4018128455, 20090642275]

約数ペア:

[(1, 20090642275), (5, 4018128455), (11, 1826422025), (19, 1057402225), (25, 803625691), (55, 365284405), (95, 211480445), (179, 112238225), (209, 96127475), (275, 73056881), (475, 42296089), (895, 22447645), (1045, 19225495), (1969, 10203475), (3401, 5907275), (4475, 4489529), (5225, 3845099), (9845, 2040695), (17005, 1181455), (21481, 935275), (37411, 537025), (49225, 408139), (85025, 236291), (107405, 187055)]