28730505

素因数分解:

$3^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1\times {\mathrm{509}}^1$

素因数の和:641

約数の個数: 32

約数和(自身を含む): 47589120

約数和(自身を除く): 18858615

約数列:

[1, 3, 5, 15, 53, 71, 159, 213, 265, 355, 509, 795, 1065, 1527, 2545, 3763, 7635, 11289, 18815, 26977, 36139, 56445, 80931, 108417, 134885, 180695, 404655, 542085, 1915367, 5746101, 9576835, 28730505]

約数ペア:

[(1, 28730505), (3, 9576835), (5, 5746101), (15, 1915367), (53, 542085), (71, 404655), (159, 180695), (213, 134885), (265, 108417), (355, 80931), (509, 56445), (795, 36139), (1065, 26977), (1527, 18815), (2545, 11289), (3763, 7635)]