21569444

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1\times {\mathrm{151}}^1$

素因数の和:276

約数の個数: 48

約数和(自身を含む): 42542976

約数和(自身を除く): 20973532

約数列:

[1, 2, 4, 13, 26, 41, 52, 67, 82, 134, 151, 164, 268, 302, 533, 604, 871, 1066, 1742, 1963, 2132, 2747, 3484, 3926, 5494, 6191, 7852, 10117, 10988, 12382, 20234, 24764, 35711, 40468, 71422, 80483, 131521, 142844, 160966, 263042, 321932, 414797, 526084, 829594, 1659188, 5392361, 10784722, 21569444]

約数ペア:

[(1, 21569444), (2, 10784722), (4, 5392361), (13, 1659188), (26, 829594), (41, 526084), (52, 414797), (67, 321932), (82, 263042), (134, 160966), (151, 142844), (164, 131521), (268, 80483), (302, 71422), (533, 40468), (604, 35711), (871, 24764), (1066, 20234), (1742, 12382), (1963, 10988), (2132, 10117), (2747, 7852), (3484, 6191), (3926, 5494)]