81881745

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{487}}^1\times {\mathrm{1019}}^1$

素因数の和:1525

約数の個数: 32

約数和(自身を含む): 143354880

約数和(自身を除く): 61473135

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 487, 1019, 1461, 2435, 3057, 5095, 5357, 7305, 11209, 15285, 16071, 26785, 33627, 56045, 80355, 168135, 496253, 1488759, 2481265, 5458783, 7443795, 16376349, 27293915, 81881745]

約数ペア:

[(1, 81881745), (3, 27293915), (5, 16376349), (11, 7443795), (15, 5458783), (33, 2481265), (55, 1488759), (165, 496253), (487, 168135), (1019, 80355), (1461, 56045), (2435, 33627), (3057, 26785), (5095, 16071), (5357, 15285), (7305, 11209)]