28949320

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{16831}}^1$

素因数の和:16885

約数の個数: 32

約数和(自身を含む): 66654720

約数和(自身を除く): 37705400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 16831, 33662, 67324, 84155, 134648, 168310, 336620, 673240, 723733, 1447466, 2894932, 3618665, 5789864, 7237330, 14474660, 28949320]

約数ペア:

[(1, 28949320), (2, 14474660), (4, 7237330), (5, 5789864), (8, 3618665), (10, 2894932), (20, 1447466), (40, 723733), (43, 673240), (86, 336620), (172, 168310), (215, 134648), (344, 84155), (430, 67324), (860, 33662), (1720, 16831)]