4438420

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{647}}^1$

素因数の和:677

約数の個数: 48

約数和(自身を含む): 10886400

約数和(自身を除く): 6447980

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 343, 490, 647, 686, 980, 1294, 1372, 1715, 2588, 3235, 3430, 4529, 6470, 6860, 9058, 12940, 18116, 22645, 31703, 45290, 63406, 90580, 126812, 158515, 221921, 317030, 443842, 634060, 887684, 1109605, 2219210, 4438420]

約数ペア:

[(1, 4438420), (2, 2219210), (4, 1109605), (5, 887684), (7, 634060), (10, 443842), (14, 317030), (20, 221921), (28, 158515), (35, 126812), (49, 90580), (70, 63406), (98, 45290), (140, 31703), (196, 22645), (245, 18116), (343, 12940), (490, 9058), (647, 6860), (686, 6470), (980, 4529), (1294, 3430), (1372, 3235), (1715, 2588)]