18683325

素因数分解:

$3^3\times 5^2\times {\mathrm{89}}^1\times {\mathrm{311}}^1$

素因数の和:419

約数の個数: 48

約数和(自身を含む): 34819200

約数和(自身を除く): 16135875

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 89, 135, 225, 267, 311, 445, 675, 801, 933, 1335, 1555, 2225, 2403, 2799, 4005, 4665, 6675, 7775, 8397, 12015, 13995, 20025, 23325, 27679, 41985, 60075, 69975, 83037, 138395, 209925, 249111, 415185, 691975, 747333, 1245555, 2075925, 3736665, 6227775, 18683325]

約数ペア:

[(1, 18683325), (3, 6227775), (5, 3736665), (9, 2075925), (15, 1245555), (25, 747333), (27, 691975), (45, 415185), (75, 249111), (89, 209925), (135, 138395), (225, 83037), (267, 69975), (311, 60075), (445, 41985), (675, 27679), (801, 23325), (933, 20025), (1335, 13995), (1555, 12015), (2225, 8397), (2403, 7775), (2799, 6675), (4005, 4665)]