81606840

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{97151}}^1$

素因数の和:97172

約数の個数: 64

約数和(自身を含む): 279797760

約数和(自身を除く): 198190920

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 97151, 194302, 291453, 388604, 485755, 582906, 680057, 777208, 971510, 1165812, 1360114, 1457265, 1943020, 2040171, 2331624, 2720228, 2914530, 3400285, 3886040, 4080342, 5440456, 5829060, 6800570, 8160684, 10200855, 11658120, 13601140, 16321368, 20401710, 27202280, 40803420, 81606840]

約数ペア:

[(1, 81606840), (2, 40803420), (3, 27202280), (4, 20401710), (5, 16321368), (6, 13601140), (7, 11658120), (8, 10200855), (10, 8160684), (12, 6800570), (14, 5829060), (15, 5440456), (20, 4080342), (21, 3886040), (24, 3400285), (28, 2914530), (30, 2720228), (35, 2331624), (40, 2040171), (42, 1943020), (56, 1457265), (60, 1360114), (70, 1165812), (84, 971510), (105, 777208), (120, 680057), (140, 582906), (168, 485755), (210, 388604), (280, 291453), (420, 194302), (840, 97151)]