20649996

素因数分解:

$2^2\times 3^2\times {\mathrm{37}}^2\times {\mathrm{419}}^1$

素因数の和:503

約数の個数: 54

約数和(自身を含む): 53775540

約数和(自身を除く): 33125544

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 37, 74, 111, 148, 222, 333, 419, 444, 666, 838, 1257, 1332, 1369, 1676, 2514, 2738, 3771, 4107, 5028, 5476, 7542, 8214, 12321, 15084, 15503, 16428, 24642, 31006, 46509, 49284, 62012, 93018, 139527, 186036, 279054, 558108, 573611, 1147222, 1720833, 2294444, 3441666, 5162499, 6883332, 10324998, 20649996]

約数ペア:

[(1, 20649996), (2, 10324998), (3, 6883332), (4, 5162499), (6, 3441666), (9, 2294444), (12, 1720833), (18, 1147222), (36, 573611), (37, 558108), (74, 279054), (111, 186036), (148, 139527), (222, 93018), (333, 62012), (419, 49284), (444, 46509), (666, 31006), (838, 24642), (1257, 16428), (1332, 15503), (1369, 15084), (1676, 12321), (2514, 8214), (2738, 7542), (3771, 5476), (4107, 5028)]