21028048

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{97}}^1\times {\mathrm{797}}^1$

素因数の和:919

約数の個数: 40

約数和(自身を含む): 43637832

約数和(自身を除く): 22609784

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 97, 136, 194, 272, 388, 776, 797, 1552, 1594, 1649, 3188, 3298, 6376, 6596, 12752, 13192, 13549, 26384, 27098, 54196, 77309, 108392, 154618, 216784, 309236, 618472, 1236944, 1314253, 2628506, 5257012, 10514024, 21028048]

約数ペア:

[(1, 21028048), (2, 10514024), (4, 5257012), (8, 2628506), (16, 1314253), (17, 1236944), (34, 618472), (68, 309236), (97, 216784), (136, 154618), (194, 108392), (272, 77309), (388, 54196), (776, 27098), (797, 26384), (1552, 13549), (1594, 13192), (1649, 12752), (3188, 6596), (3298, 6376)]