28689975

素因数分解:

$3^2\times 5^2\times {\mathrm{47}}^1\times {\mathrm{2713}}^1$

素因数の和:2776

約数の個数: 36

約数和(自身を含む): 52499616

約数和(自身を除く): 23809641

約数列:

[1, 3, 5, 9, 15, 25, 45, 47, 75, 141, 225, 235, 423, 705, 1175, 2115, 2713, 3525, 8139, 10575, 13565, 24417, 40695, 67825, 122085, 127511, 203475, 382533, 610425, 637555, 1147599, 1912665, 3187775, 5737995, 9563325, 28689975]

約数ペア:

[(1, 28689975), (3, 9563325), (5, 5737995), (9, 3187775), (15, 1912665), (25, 1147599), (45, 637555), (47, 610425), (75, 382533), (141, 203475), (225, 127511), (235, 122085), (423, 67825), (705, 40695), (1175, 24417), (2115, 13565), (2713, 10575), (3525, 8139)]