19502120

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{127}}^1\times {\mathrm{349}}^1$

素因数の和:498

約数の個数: 64

約数和(自身を含む): 48384000

約数和(自身を除く): 28881880

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 127, 220, 254, 349, 440, 508, 635, 698, 1016, 1270, 1396, 1397, 1745, 2540, 2792, 2794, 3490, 3839, 5080, 5588, 6980, 6985, 7678, 11176, 13960, 13970, 15356, 19195, 27940, 30712, 38390, 44323, 55880, 76780, 88646, 153560, 177292, 221615, 354584, 443230, 487553, 886460, 975106, 1772920, 1950212, 2437765, 3900424, 4875530, 9751060, 19502120]

約数ペア:

[(1, 19502120), (2, 9751060), (4, 4875530), (5, 3900424), (8, 2437765), (10, 1950212), (11, 1772920), (20, 975106), (22, 886460), (40, 487553), (44, 443230), (55, 354584), (88, 221615), (110, 177292), (127, 153560), (220, 88646), (254, 76780), (349, 55880), (440, 44323), (508, 38390), (635, 30712), (698, 27940), (1016, 19195), (1270, 15356), (1396, 13970), (1397, 13960), (1745, 11176), (2540, 7678), (2792, 6985), (2794, 6980), (3490, 5588), (3839, 5080)]