20576920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{5653}}^1$

素因数の和:5684

約数の個数: 64

約数和(自身を含む): 56992320

約数和(自身を除く): 36415400

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 130, 140, 182, 260, 280, 364, 455, 520, 728, 910, 1820, 3640, 5653, 11306, 22612, 28265, 39571, 45224, 56530, 73489, 79142, 113060, 146978, 158284, 197855, 226120, 293956, 316568, 367445, 395710, 514423, 587912, 734890, 791420, 1028846, 1469780, 1582840, 2057692, 2572115, 2939560, 4115384, 5144230, 10288460, 20576920]

約数ペア:

[(1, 20576920), (2, 10288460), (4, 5144230), (5, 4115384), (7, 2939560), (8, 2572115), (10, 2057692), (13, 1582840), (14, 1469780), (20, 1028846), (26, 791420), (28, 734890), (35, 587912), (40, 514423), (52, 395710), (56, 367445), (65, 316568), (70, 293956), (91, 226120), (104, 197855), (130, 158284), (140, 146978), (182, 113060), (260, 79142), (280, 73489), (364, 56530), (455, 45224), (520, 39571), (728, 28265), (910, 22612), (1820, 11306), (3640, 5653)]