66878140

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{9749}}^1$

素因数の和:9779

約数の個数: 48

約数和(自身を含む): 163800000

約数和(自身を除く): 96921860

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 343, 490, 686, 980, 1372, 1715, 3430, 6860, 9749, 19498, 38996, 48745, 68243, 97490, 136486, 194980, 272972, 341215, 477701, 682430, 955402, 1364860, 1910804, 2388505, 3343907, 4777010, 6687814, 9554020, 13375628, 16719535, 33439070, 66878140]

約数ペア:

[(1, 66878140), (2, 33439070), (4, 16719535), (5, 13375628), (7, 9554020), (10, 6687814), (14, 4777010), (20, 3343907), (28, 2388505), (35, 1910804), (49, 1364860), (70, 955402), (98, 682430), (140, 477701), (196, 341215), (245, 272972), (343, 194980), (490, 136486), (686, 97490), (980, 68243), (1372, 48745), (1715, 38996), (3430, 19498), (6860, 9749)]