21678735

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{1039}}^1$

素因数の和:1167

約数の個数: 32

約数和(自身を含む): 37739520

約数和(自身を除く): 16060785

約数列:

[1, 3, 5, 13, 15, 39, 65, 107, 195, 321, 535, 1039, 1391, 1605, 3117, 4173, 5195, 6955, 13507, 15585, 20865, 40521, 67535, 111173, 202605, 333519, 555865, 1445249, 1667595, 4335747, 7226245, 21678735]

約数ペア:

[(1, 21678735), (3, 7226245), (5, 4335747), (13, 1667595), (15, 1445249), (39, 555865), (65, 333519), (107, 202605), (195, 111173), (321, 67535), (535, 40521), (1039, 20865), (1391, 15585), (1605, 13507), (3117, 6955), (4173, 5195)]