21751875

素因数分解:

$3^3\times 5^4\times {\mathrm{1289}}^1$

素因数の和:1318

約数の個数: 40

約数和(自身を含む): 40299600

約数和(自身を除く): 18547725

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 125, 135, 225, 375, 625, 675, 1125, 1289, 1875, 3375, 3867, 5625, 6445, 11601, 16875, 19335, 32225, 34803, 58005, 96675, 161125, 174015, 290025, 483375, 805625, 870075, 1450125, 2416875, 4350375, 7250625, 21751875]

約数ペア:

[(1, 21751875), (3, 7250625), (5, 4350375), (9, 2416875), (15, 1450125), (25, 870075), (27, 805625), (45, 483375), (75, 290025), (125, 174015), (135, 161125), (225, 96675), (375, 58005), (625, 34803), (675, 32225), (1125, 19335), (1289, 16875), (1875, 11601), (3375, 6445), (3867, 5625)]