21112425

素因数分解:

$3^2\times 5^2\times {\mathrm{103}}^1\times {\mathrm{911}}^1$

素因数の和:1030

約数の個数: 36

約数和(自身を含む): 38223744

約数和(自身を除く): 17111319

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 103, 225, 309, 515, 911, 927, 1545, 2575, 2733, 4555, 4635, 7725, 8199, 13665, 22775, 23175, 40995, 68325, 93833, 204975, 281499, 469165, 844497, 1407495, 2345825, 4222485, 7037475, 21112425]

約数ペア:

[(1, 21112425), (3, 7037475), (5, 4222485), (9, 2345825), (15, 1407495), (25, 844497), (45, 469165), (75, 281499), (103, 204975), (225, 93833), (309, 68325), (515, 40995), (911, 23175), (927, 22775), (1545, 13665), (2575, 8199), (2733, 7725), (4555, 4635)]