20640816

素因数分解:

$2^4\times 3^2\times 7^1\times {\mathrm{20477}}^1$

素因数の和:20498

約数の個数: 60

約数和(自身を含む): 66021072

約数和(自身を除く): 45380256

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 28, 36, 42, 48, 56, 63, 72, 84, 112, 126, 144, 168, 252, 336, 504, 1008, 20477, 40954, 61431, 81908, 122862, 143339, 163816, 184293, 245724, 286678, 327632, 368586, 430017, 491448, 573356, 737172, 860034, 982896, 1146712, 1290051, 1474344, 1720068, 2293424, 2580102, 2948688, 3440136, 5160204, 6880272, 10320408, 20640816]

約数ペア:

[(1, 20640816), (2, 10320408), (3, 6880272), (4, 5160204), (6, 3440136), (7, 2948688), (8, 2580102), (9, 2293424), (12, 1720068), (14, 1474344), (16, 1290051), (18, 1146712), (21, 982896), (24, 860034), (28, 737172), (36, 573356), (42, 491448), (48, 430017), (56, 368586), (63, 327632), (72, 286678), (84, 245724), (112, 184293), (126, 163816), (144, 143339), (168, 122862), (252, 81908), (336, 61431), (504, 40954), (1008, 20477)]