28535780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{15679}}^1$

素因数の和:15708

約数の個数: 48

約数和(自身を含む): 73758720

約数和(自身を除く): 45222940

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 15679, 31358, 62716, 78395, 109753, 156790, 203827, 219506, 313580, 407654, 439012, 548765, 815308, 1019135, 1097530, 1426789, 2038270, 2195060, 2853578, 4076540, 5707156, 7133945, 14267890, 28535780]

約数ペア:

[(1, 28535780), (2, 14267890), (4, 7133945), (5, 5707156), (7, 4076540), (10, 2853578), (13, 2195060), (14, 2038270), (20, 1426789), (26, 1097530), (28, 1019135), (35, 815308), (52, 548765), (65, 439012), (70, 407654), (91, 313580), (130, 219506), (140, 203827), (182, 156790), (260, 109753), (364, 78395), (455, 62716), (910, 31358), (1820, 15679)]