20951238

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{449}}^1$

素因数の和:573

約数の個数: 64

約数和(自身を含む): 52876800

約数和(自身を除く): 31925562

約数列:

[1, 2, 3, 6, 7, 11, 14, 21, 22, 33, 42, 66, 77, 101, 154, 202, 231, 303, 449, 462, 606, 707, 898, 1111, 1347, 1414, 2121, 2222, 2694, 3143, 3333, 4242, 4939, 6286, 6666, 7777, 9429, 9878, 14817, 15554, 18858, 23331, 29634, 34573, 45349, 46662, 69146, 90698, 103719, 136047, 207438, 272094, 317443, 498839, 634886, 952329, 997678, 1496517, 1904658, 2993034, 3491873, 6983746, 10475619, 20951238]

約数ペア:

[(1, 20951238), (2, 10475619), (3, 6983746), (6, 3491873), (7, 2993034), (11, 1904658), (14, 1496517), (21, 997678), (22, 952329), (33, 634886), (42, 498839), (66, 317443), (77, 272094), (101, 207438), (154, 136047), (202, 103719), (231, 90698), (303, 69146), (449, 46662), (462, 45349), (606, 34573), (707, 29634), (898, 23331), (1111, 18858), (1347, 15554), (1414, 14817), (2121, 9878), (2222, 9429), (2694, 7777), (3143, 6666), (3333, 6286), (4242, 4939)]