21012578

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{7823}}^1$

素因数の和:7921

約数の個数: 16

約数和(自身を含む): 33799680

約数和(自身を除く): 12787102

約数列:

[1, 2, 17, 34, 79, 158, 1343, 2686, 7823, 15646, 132991, 265982, 618017, 1236034, 10506289, 21012578]

約数ペア:

[(1, 21012578), (2, 10506289), (17, 1236034), (34, 618017), (79, 265982), (158, 132991), (1343, 15646), (2686, 7823)]