28407219

素因数分解:

$3^1\times {\mathrm{41}}^2\times {\mathrm{43}}^1\times {\mathrm{131}}^1$

素因数の和:259

約数の個数: 24

約数和(自身を含む): 40028736

約数和(自身を除く): 11621517

約数列:

[1, 3, 41, 43, 123, 129, 131, 393, 1681, 1763, 5043, 5289, 5371, 5633, 16113, 16899, 72283, 216849, 220211, 230953, 660633, 692859, 9469073, 28407219]

約数ペア:

[(1, 28407219), (3, 9469073), (41, 692859), (43, 660633), (123, 230953), (129, 220211), (131, 216849), (393, 72283), (1681, 16899), (1763, 16113), (5043, 5633), (5289, 5371)]