18947985

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{181}}^1\times {\mathrm{997}}^1$

素因数の和:1193

約数の個数: 32

約数和(自身を含む): 34874112

約数和(自身を除く): 15926127

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 181, 543, 905, 997, 1267, 2715, 2991, 3801, 4985, 6335, 6979, 14955, 19005, 20937, 34895, 104685, 180457, 541371, 902285, 1263199, 2706855, 3789597, 6315995, 18947985]

約数ペア:

[(1, 18947985), (3, 6315995), (5, 3789597), (7, 2706855), (15, 1263199), (21, 902285), (35, 541371), (105, 180457), (181, 104685), (543, 34895), (905, 20937), (997, 19005), (1267, 14955), (2715, 6979), (2991, 6335), (3801, 4985)]