21408396

素因数分解:

$2^2\times 3^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{821}}^1$

素因数の和:922

約数の個数: 48

約数和(自身を含む): 52200288

約数和(自身を除く): 30791892

約数列:

[1, 2, 3, 4, 6, 12, 41, 53, 82, 106, 123, 159, 164, 212, 246, 318, 492, 636, 821, 1642, 2173, 2463, 3284, 4346, 4926, 6519, 8692, 9852, 13038, 26076, 33661, 43513, 67322, 87026, 100983, 130539, 134644, 174052, 201966, 261078, 403932, 522156, 1784033, 3568066, 5352099, 7136132, 10704198, 21408396]

約数ペア:

[(1, 21408396), (2, 10704198), (3, 7136132), (4, 5352099), (6, 3568066), (12, 1784033), (41, 522156), (53, 403932), (82, 261078), (106, 201966), (123, 174052), (159, 134644), (164, 130539), (212, 100983), (246, 87026), (318, 67322), (492, 43513), (636, 33661), (821, 26076), (1642, 13038), (2173, 9852), (2463, 8692), (3284, 6519), (4346, 4926)]