28531280

素因数分解:

$2^4\times 5^1\times {\mathrm{67}}^1\times {\mathrm{5323}}^1$

素因数の和:5403

約数の個数: 40

約数和(自身を含む): 67337952

約数和(自身を除く): 38806672

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 67, 80, 134, 268, 335, 536, 670, 1072, 1340, 2680, 5323, 5360, 10646, 21292, 26615, 42584, 53230, 85168, 106460, 212920, 356641, 425840, 713282, 1426564, 1783205, 2853128, 3566410, 5706256, 7132820, 14265640, 28531280]

約数ペア:

[(1, 28531280), (2, 14265640), (4, 7132820), (5, 5706256), (8, 3566410), (10, 2853128), (16, 1783205), (20, 1426564), (40, 713282), (67, 425840), (80, 356641), (134, 212920), (268, 106460), (335, 85168), (536, 53230), (670, 42584), (1072, 26615), (1340, 21292), (2680, 10646), (5323, 5360)]