20874623

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{431}}^1$

素因数の和:503

約数の個数: 32

約数和(自身を含む): 28366848

約数和(自身を除く): 7492225

約数列:

[1, 7, 11, 17, 37, 77, 119, 187, 259, 407, 431, 629, 1309, 2849, 3017, 4403, 4741, 6919, 7327, 15947, 33187, 48433, 51289, 80597, 111629, 175417, 271099, 564179, 1227919, 1897693, 2982089, 20874623]

約数ペア:

[(1, 20874623), (7, 2982089), (11, 1897693), (17, 1227919), (37, 564179), (77, 271099), (119, 175417), (187, 111629), (259, 80597), (407, 51289), (431, 48433), (629, 33187), (1309, 15947), (2849, 7327), (3017, 6919), (4403, 4741)]