19870293653

素因数分解:

$7^2\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{107}}^1\times {\mathrm{3109}}^1$

素因数の和:3306

約数の個数: 48

約数和(自身を含む): 24812127360

約数和(自身を除く): 4941833707

約数列:

[1, 7, 23, 49, 53, 107, 161, 371, 749, 1127, 1219, 2461, 2597, 3109, 5243, 5671, 8533, 17227, 21763, 39697, 59731, 71507, 120589, 130433, 152341, 164777, 277879, 332663, 500549, 913031, 1153439, 2328641, 3503843, 3789871, 6391217, 7651249, 8074073, 16300487, 17631139, 26529097, 53558743, 123417973, 185703679, 374911201, 405516197, 863925811, 2838613379, 19870293653]

約数ペア:

[(1, 19870293653), (7, 2838613379), (23, 863925811), (49, 405516197), (53, 374911201), (107, 185703679), (161, 123417973), (371, 53558743), (749, 26529097), (1127, 17631139), (1219, 16300487), (2461, 8074073), (2597, 7651249), (3109, 6391217), (5243, 3789871), (5671, 3503843), (8533, 2328641), (17227, 1153439), (21763, 913031), (39697, 500549), (59731, 332663), (71507, 277879), (120589, 164777), (130433, 152341)]