21405900

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{71353}}^1$

素因数の和:71370

約数の個数: 36

約数和(自身を含む): 61935272

約数和(自身を除く): 40529372

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 25, 30, 50, 60, 75, 100, 150, 300, 71353, 142706, 214059, 285412, 356765, 428118, 713530, 856236, 1070295, 1427060, 1783825, 2140590, 3567650, 4281180, 5351475, 7135300, 10702950, 21405900]

約数ペア:

[(1, 21405900), (2, 10702950), (3, 7135300), (4, 5351475), (5, 4281180), (6, 3567650), (10, 2140590), (12, 1783825), (15, 1427060), (20, 1070295), (25, 856236), (30, 713530), (50, 428118), (60, 356765), (75, 285412), (100, 214059), (150, 142706), (300, 71353)]