21787528

素因数分解:

$2^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{20477}}^1$

素因数の和:20509

約数の個数: 32

約数和(自身を含む): 49147200

約数和(自身を除く): 27359672

約数列:

[1, 2, 4, 7, 8, 14, 19, 28, 38, 56, 76, 133, 152, 266, 532, 1064, 20477, 40954, 81908, 143339, 163816, 286678, 389063, 573356, 778126, 1146712, 1556252, 2723441, 3112504, 5446882, 10893764, 21787528]

約数ペア:

[(1, 21787528), (2, 10893764), (4, 5446882), (7, 3112504), (8, 2723441), (14, 1556252), (19, 1146712), (28, 778126), (38, 573356), (56, 389063), (76, 286678), (133, 163816), (152, 143339), (266, 81908), (532, 40954), (1064, 20477)]