28255515

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{617}}^1$

素因数の和:739

約数の個数: 32

約数和(自身を含む): 46987776

約数和(自身を除く): 18732261

約数列:

[1, 3, 5, 15, 43, 71, 129, 213, 215, 355, 617, 645, 1065, 1851, 3053, 3085, 9159, 9255, 15265, 26531, 43807, 45795, 79593, 131421, 132655, 219035, 397965, 657105, 1883701, 5651103, 9418505, 28255515]

約数ペア:

[(1, 28255515), (3, 9418505), (5, 5651103), (15, 1883701), (43, 657105), (71, 397965), (129, 219035), (213, 132655), (215, 131421), (355, 79593), (617, 45795), (645, 43807), (1065, 26531), (1851, 15265), (3053, 9255), (3085, 9159)]