19904416

素因数分解:

$2^5\times 7^1\times {\mathrm{17}}^1\times {\mathrm{5227}}^1$

素因数の和:5261

約数の個数: 48

約数和(自身を含む): 47428416

約数和(自身を除く): 27524000

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 28, 32, 34, 56, 68, 112, 119, 136, 224, 238, 272, 476, 544, 952, 1904, 3808, 5227, 10454, 20908, 36589, 41816, 73178, 83632, 88859, 146356, 167264, 177718, 292712, 355436, 585424, 622013, 710872, 1170848, 1244026, 1421744, 2488052, 2843488, 4976104, 9952208, 19904416]

約数ペア:

[(1, 19904416), (2, 9952208), (4, 4976104), (7, 2843488), (8, 2488052), (14, 1421744), (16, 1244026), (17, 1170848), (28, 710872), (32, 622013), (34, 585424), (56, 355436), (68, 292712), (112, 177718), (119, 167264), (136, 146356), (224, 88859), (238, 83632), (272, 73178), (476, 41816), (544, 36589), (952, 20908), (1904, 10454), (3808, 5227)]