20199420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{293}}^1\times {\mathrm{383}}^1$

素因数の和:691

約数の個数: 72

約数和(自身を含む): 61641216

約数和(自身を除く): 41441796

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 293, 383, 586, 766, 879, 1149, 1172, 1465, 1532, 1758, 1915, 2298, 2637, 2930, 3447, 3516, 3830, 4395, 4596, 5274, 5745, 5860, 6894, 7660, 8790, 10548, 11490, 13185, 13788, 17235, 17580, 22980, 26370, 34470, 52740, 68940, 112219, 224438, 336657, 448876, 561095, 673314, 1009971, 1122190, 1346628, 1683285, 2019942, 2244380, 3366570, 4039884, 5049855, 6733140, 10099710, 20199420]

約数ペア:

[(1, 20199420), (2, 10099710), (3, 6733140), (4, 5049855), (5, 4039884), (6, 3366570), (9, 2244380), (10, 2019942), (12, 1683285), (15, 1346628), (18, 1122190), (20, 1009971), (30, 673314), (36, 561095), (45, 448876), (60, 336657), (90, 224438), (180, 112219), (293, 68940), (383, 52740), (586, 34470), (766, 26370), (879, 22980), (1149, 17580), (1172, 17235), (1465, 13788), (1532, 13185), (1758, 11490), (1915, 10548), (2298, 8790), (2637, 7660), (2930, 6894), (3447, 5860), (3516, 5745), (3830, 5274), (4395, 4596)]