81604020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{1360067}}^1$

素因数の和:1360079

約数の個数: 24

約数和(自身を含む): 228491424

約数和(自身を除く): 146887404

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 1360067, 2720134, 4080201, 5440268, 6800335, 8160402, 13600670, 16320804, 20401005, 27201340, 40802010, 81604020]

約数ペア:

[(1, 81604020), (2, 40802010), (3, 27201340), (4, 20401005), (5, 16320804), (6, 13600670), (10, 8160402), (12, 6800335), (15, 5440268), (20, 4080201), (30, 2720134), (60, 1360067)]