28263280

素因数分解:

$2^4\times 5^1\times {\mathrm{67}}^1\times {\mathrm{5273}}^1$

素因数の和:5353

約数の個数: 40

約数和(自身を含む): 66705552

約数和(自身を除く): 38442272

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 67, 80, 134, 268, 335, 536, 670, 1072, 1340, 2680, 5273, 5360, 10546, 21092, 26365, 42184, 52730, 84368, 105460, 210920, 353291, 421840, 706582, 1413164, 1766455, 2826328, 3532910, 5652656, 7065820, 14131640, 28263280]

約数ペア:

[(1, 28263280), (2, 14131640), (4, 7065820), (5, 5652656), (8, 3532910), (10, 2826328), (16, 1766455), (20, 1413164), (40, 706582), (67, 421840), (80, 353291), (134, 210920), (268, 105460), (335, 84368), (536, 52730), (670, 42184), (1072, 26365), (1340, 21092), (2680, 10546), (5273, 5360)]