28681515

素因数分解:

$3^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{191}}^1$

素因数の和:320

約数の個数: 48

約数和(自身を含む): 51757056

約数和(自身を除く): 23075541

約数列:

[1, 3, 5, 9, 15, 45, 47, 71, 141, 191, 213, 235, 355, 423, 573, 639, 705, 955, 1065, 1719, 2115, 2865, 3195, 3337, 8595, 8977, 10011, 13561, 16685, 26931, 30033, 40683, 44885, 50055, 67805, 80793, 122049, 134655, 150165, 203415, 403965, 610245, 637367, 1912101, 3186835, 5736303, 9560505, 28681515]

約数ペア:

[(1, 28681515), (3, 9560505), (5, 5736303), (9, 3186835), (15, 1912101), (45, 637367), (47, 610245), (71, 403965), (141, 203415), (191, 150165), (213, 134655), (235, 122049), (355, 80793), (423, 67805), (573, 50055), (639, 44885), (705, 40683), (955, 30033), (1065, 26931), (1719, 16685), (2115, 13561), (2865, 10011), (3195, 8977), (3337, 8595)]