251371380

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{322271}}^1$

素因数の和:322296

約数の個数: 48

約数和(自身を含む): 757983744

約数和(自身を除く): 506612364

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 322271, 644542, 966813, 1289084, 1611355, 1933626, 3222710, 3867252, 4189523, 4834065, 6445420, 8379046, 9668130, 12568569, 16758092, 19336260, 20947615, 25137138, 41895230, 50274276, 62842845, 83790460, 125685690, 251371380]

約数ペア:

[(1, 251371380), (2, 125685690), (3, 83790460), (4, 62842845), (5, 50274276), (6, 41895230), (10, 25137138), (12, 20947615), (13, 19336260), (15, 16758092), (20, 12568569), (26, 9668130), (30, 8379046), (39, 6445420), (52, 4834065), (60, 4189523), (65, 3867252), (78, 3222710), (130, 1933626), (156, 1611355), (195, 1289084), (260, 966813), (390, 644542), (780, 322271)]