20388540

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{419}}^1\times {\mathrm{811}}^1$

素因数の和:1242

約数の個数: 48

約数和(自身を含む): 57294720

約数和(自身を除く): 36906180

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 419, 811, 838, 1257, 1622, 1676, 2095, 2433, 2514, 3244, 4055, 4190, 4866, 5028, 6285, 8110, 8380, 9732, 12165, 12570, 16220, 24330, 25140, 48660, 339809, 679618, 1019427, 1359236, 1699045, 2038854, 3398090, 4077708, 5097135, 6796180, 10194270, 20388540]

約数ペア:

[(1, 20388540), (2, 10194270), (3, 6796180), (4, 5097135), (5, 4077708), (6, 3398090), (10, 2038854), (12, 1699045), (15, 1359236), (20, 1019427), (30, 679618), (60, 339809), (419, 48660), (811, 25140), (838, 24330), (1257, 16220), (1622, 12570), (1676, 12165), (2095, 9732), (2433, 8380), (2514, 8110), (3244, 6285), (4055, 5028), (4190, 4866)]