20626060

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{1619}}^1$

素因数の和:1655

約数の個数: 72

約数和(自身を含む): 54295920

約数和(自身を除く): 33669860

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 49, 52, 65, 70, 91, 98, 130, 140, 182, 196, 245, 260, 364, 455, 490, 637, 910, 980, 1274, 1619, 1820, 2548, 3185, 3238, 6370, 6476, 8095, 11333, 12740, 16190, 21047, 22666, 32380, 42094, 45332, 56665, 79331, 84188, 105235, 113330, 147329, 158662, 210470, 226660, 294658, 317324, 396655, 420940, 589316, 736645, 793310, 1031303, 1473290, 1586620, 2062606, 2946580, 4125212, 5156515, 10313030, 20626060]

約数ペア:

[(1, 20626060), (2, 10313030), (4, 5156515), (5, 4125212), (7, 2946580), (10, 2062606), (13, 1586620), (14, 1473290), (20, 1031303), (26, 793310), (28, 736645), (35, 589316), (49, 420940), (52, 396655), (65, 317324), (70, 294658), (91, 226660), (98, 210470), (130, 158662), (140, 147329), (182, 113330), (196, 105235), (245, 84188), (260, 79331), (364, 56665), (455, 45332), (490, 42094), (637, 32380), (910, 22666), (980, 21047), (1274, 16190), (1619, 12740), (1820, 11333), (2548, 8095), (3185, 6476), (3238, 6370)]