15888760

素因数分解:

$2^3\times 5^1\times {\mathrm{491}}^1\times {\mathrm{809}}^1$

素因数の和:1311

約数の個数: 32

約数和(自身を含む): 35866800

約数和(自身を除く): 19978040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 491, 809, 982, 1618, 1964, 2455, 3236, 3928, 4045, 4910, 6472, 8090, 9820, 16180, 19640, 32360, 397219, 794438, 1588876, 1986095, 3177752, 3972190, 7944380, 15888760]

約数ペア:

[(1, 15888760), (2, 7944380), (4, 3972190), (5, 3177752), (8, 1986095), (10, 1588876), (20, 794438), (40, 397219), (491, 32360), (809, 19640), (982, 16180), (1618, 9820), (1964, 8090), (2455, 6472), (3236, 4910), (3928, 4045)]