20005380

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{53}}^1\times {\mathrm{233}}^1$

素因数の和:307

約数の個数: 120

約数和(自身を含む): 64216152

約数和(自身を除く): 44210772

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 53, 54, 60, 81, 90, 106, 108, 135, 159, 162, 180, 212, 233, 265, 270, 318, 324, 405, 466, 477, 530, 540, 636, 699, 795, 810, 932, 954, 1060, 1165, 1398, 1431, 1590, 1620, 1908, 2097, 2330, 2385, 2796, 2862, 3180, 3495, 4194, 4293, 4660, 4770, 5724, 6291, 6990, 7155, 8388, 8586, 9540, 10485, 12349, 12582, 13980, 14310, 17172, 18873, 20970, 21465, 24698, 25164, 28620, 31455, 37047, 37746, 41940, 42930, 49396, 61745, 62910, 74094, 75492, 85860, 94365, 111141, 123490, 125820, 148188, 185235, 188730, 222282, 246980, 333423, 370470, 377460, 444564, 555705, 666846, 740940, 1000269, 1111410, 1333692, 1667115, 2000538, 2222820, 3334230, 4001076, 5001345, 6668460, 10002690, 20005380]

約数ペア:

[(1, 20005380), (2, 10002690), (3, 6668460), (4, 5001345), (5, 4001076), (6, 3334230), (9, 2222820), (10, 2000538), (12, 1667115), (15, 1333692), (18, 1111410), (20, 1000269), (27, 740940), (30, 666846), (36, 555705), (45, 444564), (53, 377460), (54, 370470), (60, 333423), (81, 246980), (90, 222282), (106, 188730), (108, 185235), (135, 148188), (159, 125820), (162, 123490), (180, 111141), (212, 94365), (233, 85860), (265, 75492), (270, 74094), (318, 62910), (324, 61745), (405, 49396), (466, 42930), (477, 41940), (530, 37746), (540, 37047), (636, 31455), (699, 28620), (795, 25164), (810, 24698), (932, 21465), (954, 20970), (1060, 18873), (1165, 17172), (1398, 14310), (1431, 13980), (1590, 12582), (1620, 12349), (1908, 10485), (2097, 9540), (2330, 8586), (2385, 8388), (2796, 7155), (2862, 6990), (3180, 6291), (3495, 5724), (4194, 4770), (4293, 4660)]