21803248

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{1129}}^1$

素因数の和:1225

約数の個数: 40

約数和(自身を含む): 45398880

約数和(自身を除く): 23595632

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 71, 136, 142, 272, 284, 568, 1129, 1136, 1207, 2258, 2414, 4516, 4828, 9032, 9656, 18064, 19193, 19312, 38386, 76772, 80159, 153544, 160318, 307088, 320636, 641272, 1282544, 1362703, 2725406, 5450812, 10901624, 21803248]

約数ペア:

[(1, 21803248), (2, 10901624), (4, 5450812), (8, 2725406), (16, 1362703), (17, 1282544), (34, 641272), (68, 320636), (71, 307088), (136, 160318), (142, 153544), (272, 80159), (284, 76772), (568, 38386), (1129, 19312), (1136, 19193), (1207, 18064), (2258, 9656), (2414, 9032), (4516, 4828)]