21198410

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1$

素因数の和:167

約数の個数: 64

約数和(自身を含む): 42550272

約数和(自身を除く): 21351862

約数列:

[1, 2, 5, 10, 23, 37, 46, 47, 53, 74, 94, 106, 115, 185, 230, 235, 265, 370, 470, 530, 851, 1081, 1219, 1702, 1739, 1961, 2162, 2438, 2491, 3478, 3922, 4255, 4982, 5405, 6095, 8510, 8695, 9805, 10810, 12190, 12455, 17390, 19610, 24910, 39997, 45103, 57293, 79994, 90206, 92167, 114586, 184334, 199985, 225515, 286465, 399970, 451030, 460835, 572930, 921670, 2119841, 4239682, 10599205, 21198410]

約数ペア:

[(1, 21198410), (2, 10599205), (5, 4239682), (10, 2119841), (23, 921670), (37, 572930), (46, 460835), (47, 451030), (53, 399970), (74, 286465), (94, 225515), (106, 199985), (115, 184334), (185, 114586), (230, 92167), (235, 90206), (265, 79994), (370, 57293), (470, 45103), (530, 39997), (851, 24910), (1081, 19610), (1219, 17390), (1702, 12455), (1739, 12190), (1961, 10810), (2162, 9805), (2438, 8695), (2491, 8510), (3478, 6095), (3922, 5405), (4255, 4982)]