81214700

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{181}}^1\times {\mathrm{641}}^1$

素因数の和:843

約数の個数: 72

約数和(自身を含む): 202841184

約数和(自身を除く): 121626484

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 100, 140, 175, 181, 350, 362, 641, 700, 724, 905, 1267, 1282, 1810, 2534, 2564, 3205, 3620, 4487, 4525, 5068, 6335, 6410, 8974, 9050, 12670, 12820, 16025, 17948, 18100, 22435, 25340, 31675, 32050, 44870, 63350, 64100, 89740, 112175, 116021, 126700, 224350, 232042, 448700, 464084, 580105, 812147, 1160210, 1624294, 2320420, 2900525, 3248588, 4060735, 5801050, 8121470, 11602100, 16242940, 20303675, 40607350, 81214700]

約数ペア:

[(1, 81214700), (2, 40607350), (4, 20303675), (5, 16242940), (7, 11602100), (10, 8121470), (14, 5801050), (20, 4060735), (25, 3248588), (28, 2900525), (35, 2320420), (50, 1624294), (70, 1160210), (100, 812147), (140, 580105), (175, 464084), (181, 448700), (350, 232042), (362, 224350), (641, 126700), (700, 116021), (724, 112175), (905, 89740), (1267, 64100), (1282, 63350), (1810, 44870), (2534, 32050), (2564, 31675), (3205, 25340), (3620, 22435), (4487, 18100), (4525, 17948), (5068, 16025), (6335, 12820), (6410, 12670), (8974, 9050)]