20178825

素因数分解:

$3^1\times 5^2\times {\mathrm{43}}^1\times {\mathrm{6257}}^1$

素因数の和:6313

約数の個数: 24

約数和(自身を含む): 34143648

約数和(自身を除く): 13964823

約数列:

[1, 3, 5, 15, 25, 43, 75, 129, 215, 645, 1075, 3225, 6257, 18771, 31285, 93855, 156425, 269051, 469275, 807153, 1345255, 4035765, 6726275, 20178825]

約数ペア:

[(1, 20178825), (3, 6726275), (5, 4035765), (15, 1345255), (25, 807153), (43, 469275), (75, 269051), (129, 156425), (215, 93855), (645, 31285), (1075, 18771), (3225, 6257)]