21297165

素因数分解:

$3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{173}}^1\times {\mathrm{283}}^1$

素因数の和:493

約数の個数: 32

約数和(自身を含む): 35579520

約数和(自身を除く): 14282355

約数列:

[1, 3, 5, 15, 29, 87, 145, 173, 283, 435, 519, 849, 865, 1415, 2595, 4245, 5017, 8207, 15051, 24621, 25085, 41035, 48959, 75255, 123105, 146877, 244795, 734385, 1419811, 4259433, 7099055, 21297165]

約数ペア:

[(1, 21297165), (3, 7099055), (5, 4259433), (15, 1419811), (29, 734385), (87, 244795), (145, 146877), (173, 123105), (283, 75255), (435, 48959), (519, 41035), (849, 25085), (865, 24621), (1415, 15051), (2595, 8207), (4245, 5017)]