128428209

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{191}}^1\times {\mathrm{821}}^1$

素因数の和:1038

約数の個数: 48

約数和(自身を含む): 229791744

約数和(自身を除く): 101363535

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 191, 273, 573, 819, 821, 1337, 1719, 2463, 2483, 4011, 5747, 7389, 7449, 10673, 12033, 17241, 17381, 22347, 32019, 51723, 52143, 74711, 96057, 156429, 156811, 224133, 470433, 672399, 1097677, 1411299, 2038543, 3293031, 6115629, 9879093, 14269801, 18346887, 42809403, 128428209]

約数ペア:

[(1, 128428209), (3, 42809403), (7, 18346887), (9, 14269801), (13, 9879093), (21, 6115629), (39, 3293031), (63, 2038543), (91, 1411299), (117, 1097677), (191, 672399), (273, 470433), (573, 224133), (819, 156811), (821, 156429), (1337, 96057), (1719, 74711), (2463, 52143), (2483, 51723), (4011, 32019), (5747, 22347), (7389, 17381), (7449, 17241), (10673, 12033)]