29516920

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{131}}^2$

素因数の和:316

約数の個数: 48

約数和(自身を含む): 68480280

約数和(自身を除く): 38963360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 131, 172, 215, 262, 344, 430, 524, 655, 860, 1048, 1310, 1720, 2620, 5240, 5633, 11266, 17161, 22532, 28165, 34322, 45064, 56330, 68644, 85805, 112660, 137288, 171610, 225320, 343220, 686440, 737923, 1475846, 2951692, 3689615, 5903384, 7379230, 14758460, 29516920]

約数ペア:

[(1, 29516920), (2, 14758460), (4, 7379230), (5, 5903384), (8, 3689615), (10, 2951692), (20, 1475846), (40, 737923), (43, 686440), (86, 343220), (131, 225320), (172, 171610), (215, 137288), (262, 112660), (344, 85805), (430, 68644), (524, 56330), (655, 45064), (860, 34322), (1048, 28165), (1310, 22532), (1720, 17161), (2620, 11266), (5240, 5633)]