21480928

素因数分解:

$2^5\times 7^1\times {\mathrm{17}}^1\times {\mathrm{5641}}^1$

素因数の和:5675

約数の個数: 48

約数和(自身を含む): 51184224

約数和(自身を除く): 29703296

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, 5641, 11282, 22564, 39487, 45128, 78974, 90256, 95897, 157948, 180512, 191794, 315896, 383588, 631792, 671279, 767176, 1263584, 1342558, 1534352, 2685116, 3068704, 5370232, 10740464, 21480928]

約数ペア:

[(1, 21480928), (2, 10740464), (4, 5370232), (7, 3068704), (8, 2685116), (14, 1534352), (16, 1342558), (17, 1263584), (28, 767176), (32, 671279), (34, 631792), (56, 383588), (68, 315896), (112, 191794), (119, 180512), (136, 157948), (224, 95897), (238, 90256), (272, 78974), (476, 45128), (544, 39487), (952, 22564), (1904, 11282), (3808, 5641)]