21697245

素因数分解:

$3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{6791}}^1$

素因数の和:6873

約数の個数: 24

約数和(自身を含む): 38143872

約数和(自身を除く): 16446627

約数列:

[1, 3, 5, 9, 15, 45, 71, 213, 355, 639, 1065, 3195, 6791, 20373, 33955, 61119, 101865, 305595, 482161, 1446483, 2410805, 4339449, 7232415, 21697245]

約数ペア:

[(1, 21697245), (3, 7232415), (5, 4339449), (9, 2410805), (15, 1446483), (45, 482161), (71, 305595), (213, 101865), (355, 61119), (639, 33955), (1065, 20373), (3195, 6791)]