217298980

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{83}}^1\times {\mathrm{1657}}^1$

素因数の和:1828

約数の個数: 48

約数和(自身を含む): 467953920

約数和(自身を除く): 250654940

約数列:

[1, 2, 4, 5, 10, 20, 79, 83, 158, 166, 316, 332, 395, 415, 790, 830, 1580, 1657, 1660, 3314, 6557, 6628, 8285, 13114, 16570, 26228, 32785, 33140, 65570, 130903, 131140, 137531, 261806, 275062, 523612, 550124, 654515, 687655, 1309030, 1375310, 2618060, 2750620, 10864949, 21729898, 43459796, 54324745, 108649490, 217298980]

約数ペア:

[(1, 217298980), (2, 108649490), (4, 54324745), (5, 43459796), (10, 21729898), (20, 10864949), (79, 2750620), (83, 2618060), (158, 1375310), (166, 1309030), (316, 687655), (332, 654515), (395, 550124), (415, 523612), (790, 275062), (830, 261806), (1580, 137531), (1657, 131140), (1660, 130903), (3314, 65570), (6557, 33140), (6628, 32785), (8285, 26228), (13114, 16570)]