20522970

素因数分解:

$2^1\times 3^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1949}}^1$

素因数の和:1981

約数の個数: 80

約数和(自身を含む): 59459400

約数和(自身を除く): 38936430

約数列:

[1, 2, 3, 5, 6, 9, 10, 13, 15, 18, 26, 27, 30, 39, 45, 54, 65, 78, 81, 90, 117, 130, 135, 162, 195, 234, 270, 351, 390, 405, 585, 702, 810, 1053, 1170, 1755, 1949, 2106, 3510, 3898, 5265, 5847, 9745, 10530, 11694, 17541, 19490, 25337, 29235, 35082, 50674, 52623, 58470, 76011, 87705, 105246, 126685, 152022, 157869, 175410, 228033, 253370, 263115, 315738, 380055, 456066, 526230, 684099, 760110, 789345, 1140165, 1368198, 1578690, 2052297, 2280330, 3420495, 4104594, 6840990, 10261485, 20522970]

約数ペア:

[(1, 20522970), (2, 10261485), (3, 6840990), (5, 4104594), (6, 3420495), (9, 2280330), (10, 2052297), (13, 1578690), (15, 1368198), (18, 1140165), (26, 789345), (27, 760110), (30, 684099), (39, 526230), (45, 456066), (54, 380055), (65, 315738), (78, 263115), (81, 253370), (90, 228033), (117, 175410), (130, 157869), (135, 152022), (162, 126685), (195, 105246), (234, 87705), (270, 76011), (351, 58470), (390, 52623), (405, 50674), (585, 35082), (702, 29235), (810, 25337), (1053, 19490), (1170, 17541), (1755, 11694), (1949, 10530), (2106, 9745), (3510, 5847), (3898, 5265)]