28897720

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{317}}^1$

素因数の和:424

約数の個数: 64

約数和(自身を含む): 68001120

約数和(自身を除く): 39103400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 53, 86, 106, 172, 212, 215, 265, 317, 344, 424, 430, 530, 634, 860, 1060, 1268, 1585, 1720, 2120, 2279, 2536, 3170, 4558, 6340, 9116, 11395, 12680, 13631, 16801, 18232, 22790, 27262, 33602, 45580, 54524, 67204, 68155, 84005, 91160, 109048, 134408, 136310, 168010, 272620, 336020, 545240, 672040, 722443, 1444886, 2889772, 3612215, 5779544, 7224430, 14448860, 28897720]

約数ペア:

[(1, 28897720), (2, 14448860), (4, 7224430), (5, 5779544), (8, 3612215), (10, 2889772), (20, 1444886), (40, 722443), (43, 672040), (53, 545240), (86, 336020), (106, 272620), (172, 168010), (212, 136310), (215, 134408), (265, 109048), (317, 91160), (344, 84005), (424, 68155), (430, 67204), (530, 54524), (634, 45580), (860, 33602), (1060, 27262), (1268, 22790), (1585, 18232), (1720, 16801), (2120, 13631), (2279, 12680), (2536, 11395), (3170, 9116), (4558, 6340)]