16640775

素因数分解:

$3^3\times 5^2\times {\mathrm{89}}^1\times {\mathrm{277}}^1$

素因数の和:385

約数の個数: 48

約数和(自身を含む): 31024800

約数和(自身を除く): 14384025

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 89, 135, 225, 267, 277, 445, 675, 801, 831, 1335, 1385, 2225, 2403, 2493, 4005, 4155, 6675, 6925, 7479, 12015, 12465, 20025, 20775, 24653, 37395, 60075, 62325, 73959, 123265, 186975, 221877, 369795, 616325, 665631, 1109385, 1848975, 3328155, 5546925, 16640775]

約数ペア:

[(1, 16640775), (3, 5546925), (5, 3328155), (9, 1848975), (15, 1109385), (25, 665631), (27, 616325), (45, 369795), (75, 221877), (89, 186975), (135, 123265), (225, 73959), (267, 62325), (277, 60075), (445, 37395), (675, 24653), (801, 20775), (831, 20025), (1335, 12465), (1385, 12015), (2225, 7479), (2403, 6925), (2493, 6675), (4005, 4155)]