21819375

素因数分解:

$3^4\times 5^4\times {\mathrm{431}}^1$

素因数の和:463

約数の個数: 50

約数和(自身を含む): 40824432

約数和(自身を除く): 19005057

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 81, 125, 135, 225, 375, 405, 431, 625, 675, 1125, 1293, 1875, 2025, 2155, 3375, 3879, 5625, 6465, 10125, 10775, 11637, 16875, 19395, 32325, 34911, 50625, 53875, 58185, 96975, 161625, 174555, 269375, 290925, 484875, 808125, 872775, 1454625, 2424375, 4363875, 7273125, 21819375]

約数ペア:

[(1, 21819375), (3, 7273125), (5, 4363875), (9, 2424375), (15, 1454625), (25, 872775), (27, 808125), (45, 484875), (75, 290925), (81, 269375), (125, 174555), (135, 161625), (225, 96975), (375, 58185), (405, 53875), (431, 50625), (625, 34911), (675, 32325), (1125, 19395), (1293, 16875), (1875, 11637), (2025, 10775), (2155, 10125), (3375, 6465), (3879, 5625)]