20394825

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{419}}^1$

素因数の和:502

約数の個数: 48

約数和(自身を含む): 37497600

約数和(自身を除く): 17102775

約数列:

[1, 3, 5, 11, 15, 25, 33, 55, 59, 75, 165, 177, 275, 295, 419, 649, 825, 885, 1257, 1475, 1947, 2095, 3245, 4425, 4609, 6285, 9735, 10475, 13827, 16225, 23045, 24721, 31425, 48675, 69135, 74163, 115225, 123605, 271931, 345675, 370815, 618025, 815793, 1359655, 1854075, 4078965, 6798275, 20394825]

約数ペア:

[(1, 20394825), (3, 6798275), (5, 4078965), (11, 1854075), (15, 1359655), (25, 815793), (33, 618025), (55, 370815), (59, 345675), (75, 271931), (165, 123605), (177, 115225), (275, 74163), (295, 69135), (419, 48675), (649, 31425), (825, 24721), (885, 23045), (1257, 16225), (1475, 13827), (1947, 10475), (2095, 9735), (3245, 6285), (4425, 4609)]