21216068

素因数分解:

$2^2\times {\mathrm{17}}^2\times {\mathrm{18353}}^1$

素因数の和:18391

約数の個数: 18

約数和(自身を含む): 39442746

約数和(自身を除く): 18226678

約数列:

[1, 2, 4, 17, 34, 68, 289, 578, 1156, 18353, 36706, 73412, 312001, 624002, 1248004, 5304017, 10608034, 21216068]

約数ペア:

[(1, 21216068), (2, 10608034), (4, 5304017), (17, 1248004), (34, 624002), (68, 312001), (289, 73412), (578, 36706), (1156, 18353)]