81605640

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{21937}}^1$

素因数の和:21982

約数の個数: 64

約数和(自身を含む): 252725760

約数和(自身を除く): 171120120

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 31, 40, 60, 62, 93, 120, 124, 155, 186, 248, 310, 372, 465, 620, 744, 930, 1240, 1860, 3720, 21937, 43874, 65811, 87748, 109685, 131622, 175496, 219370, 263244, 329055, 438740, 526488, 658110, 680047, 877480, 1316220, 1360094, 2040141, 2632440, 2720188, 3400235, 4080282, 5440376, 6800470, 8160564, 10200705, 13600940, 16321128, 20401410, 27201880, 40802820, 81605640]

約数ペア:

[(1, 81605640), (2, 40802820), (3, 27201880), (4, 20401410), (5, 16321128), (6, 13600940), (8, 10200705), (10, 8160564), (12, 6800470), (15, 5440376), (20, 4080282), (24, 3400235), (30, 2720188), (31, 2632440), (40, 2040141), (60, 1360094), (62, 1316220), (93, 877480), (120, 680047), (124, 658110), (155, 526488), (186, 438740), (248, 329055), (310, 263244), (372, 219370), (465, 175496), (620, 131622), (744, 109685), (930, 87748), (1240, 65811), (1860, 43874), (3720, 21937)]