8120140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{1871}}^1$

素因数の和:1918

約数の個数: 48

約数和(自身を含む): 20127744

約数和(自身を除く): 12007604

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 62, 70, 124, 140, 155, 217, 310, 434, 620, 868, 1085, 1871, 2170, 3742, 4340, 7484, 9355, 13097, 18710, 26194, 37420, 52388, 58001, 65485, 116002, 130970, 232004, 261940, 290005, 406007, 580010, 812014, 1160020, 1624028, 2030035, 4060070, 8120140]

約数ペア:

[(1, 8120140), (2, 4060070), (4, 2030035), (5, 1624028), (7, 1160020), (10, 812014), (14, 580010), (20, 406007), (28, 290005), (31, 261940), (35, 232004), (62, 130970), (70, 116002), (124, 65485), (140, 58001), (155, 52388), (217, 37420), (310, 26194), (434, 18710), (620, 13097), (868, 9355), (1085, 7484), (1871, 4340), (2170, 3742)]