21287436

素因数分解:

$2^2\times 3^1\times {\mathrm{59}}^1\times {\mathrm{107}}^1\times {\mathrm{281}}^1$

素因数の和:454

約数の個数: 48

約数和(自身を含む): 51166080

約数和(自身を除く): 29878644

約数列:

[1, 2, 3, 4, 6, 12, 59, 107, 118, 177, 214, 236, 281, 321, 354, 428, 562, 642, 708, 843, 1124, 1284, 1686, 3372, 6313, 12626, 16579, 18939, 25252, 30067, 33158, 37878, 49737, 60134, 66316, 75756, 90201, 99474, 120268, 180402, 198948, 360804, 1773953, 3547906, 5321859, 7095812, 10643718, 21287436]

約数ペア:

[(1, 21287436), (2, 10643718), (3, 7095812), (4, 5321859), (6, 3547906), (12, 1773953), (59, 360804), (107, 198948), (118, 180402), (177, 120268), (214, 99474), (236, 90201), (281, 75756), (321, 66316), (354, 60134), (428, 49737), (562, 37878), (642, 33158), (708, 30067), (843, 25252), (1124, 18939), (1284, 16579), (1686, 12626), (3372, 6313)]