20009745

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{457}}^1$

素因数の和:614

約数の個数: 48

約数和(自身を含む): 40010880

約数和(自身を除く): 20001135

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 139, 315, 417, 457, 695, 973, 1251, 1371, 2085, 2285, 2919, 3199, 4113, 4865, 6255, 6855, 8757, 9597, 14595, 15995, 20565, 28791, 43785, 47985, 63523, 143955, 190569, 317615, 444661, 571707, 952845, 1333983, 2223305, 2858535, 4001949, 6669915, 20009745]

約数ペア:

[(1, 20009745), (3, 6669915), (5, 4001949), (7, 2858535), (9, 2223305), (15, 1333983), (21, 952845), (35, 571707), (45, 444661), (63, 317615), (105, 190569), (139, 143955), (315, 63523), (417, 47985), (457, 43785), (695, 28791), (973, 20565), (1251, 15995), (1371, 14595), (2085, 9597), (2285, 8757), (2919, 6855), (3199, 6255), (4113, 4865)]