13394840

素因数分解:

$2^3\times 5^1\times {\mathrm{257}}^1\times {\mathrm{1303}}^1$

素因数の和:1571

約数の個数: 32

約数和(自身を含む): 30278880

約数和(自身を除く): 16884040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 257, 514, 1028, 1285, 1303, 2056, 2570, 2606, 5140, 5212, 6515, 10280, 10424, 13030, 26060, 52120, 334871, 669742, 1339484, 1674355, 2678968, 3348710, 6697420, 13394840]

約数ペア:

[(1, 13394840), (2, 6697420), (4, 3348710), (5, 2678968), (8, 1674355), (10, 1339484), (20, 669742), (40, 334871), (257, 52120), (514, 26060), (1028, 13030), (1285, 10424), (1303, 10280), (2056, 6515), (2570, 5212), (2606, 5140)]