724120

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{421}}^1$

素因数の和:475

約数の個数: 32

約数和(自身を含む): 1671120

約数和(自身を除く): 947000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 421, 430, 842, 860, 1684, 1720, 2105, 3368, 4210, 8420, 16840, 18103, 36206, 72412, 90515, 144824, 181030, 362060, 724120]

約数ペア:

[(1, 724120), (2, 362060), (4, 181030), (5, 144824), (8, 90515), (10, 72412), (20, 36206), (40, 18103), (43, 16840), (86, 8420), (172, 4210), (215, 3368), (344, 2105), (421, 1720), (430, 1684), (842, 860)]