20989944

素因数分解:

$2^3\times 3^2\times {\mathrm{401}}^1\times {\mathrm{727}}^1$

素因数の和:1140

約数の個数: 48

約数和(自身を含む): 57067920

約数和(自身を除く): 36077976

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 401, 727, 802, 1203, 1454, 1604, 2181, 2406, 2908, 3208, 3609, 4362, 4812, 5816, 6543, 7218, 8724, 9624, 13086, 14436, 17448, 26172, 28872, 52344, 291527, 583054, 874581, 1166108, 1749162, 2332216, 2623743, 3498324, 5247486, 6996648, 10494972, 20989944]

約数ペア:

[(1, 20989944), (2, 10494972), (3, 6996648), (4, 5247486), (6, 3498324), (8, 2623743), (9, 2332216), (12, 1749162), (18, 1166108), (24, 874581), (36, 583054), (72, 291527), (401, 52344), (727, 28872), (802, 26172), (1203, 17448), (1454, 14436), (1604, 13086), (2181, 9624), (2406, 8724), (2908, 7218), (3208, 6543), (3609, 5816), (4362, 4812)]