21080068

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{7561}}^1$

素因数の和:7623

約数の個数: 24

約数和(自身を含む): 40018104

約数和(自身を除く): 18938036

約数列:

[1, 2, 4, 17, 34, 41, 68, 82, 164, 697, 1394, 2788, 7561, 15122, 30244, 128537, 257074, 310001, 514148, 620002, 1240004, 5270017, 10540034, 21080068]

約数ペア:

[(1, 21080068), (2, 10540034), (4, 5270017), (17, 1240004), (34, 620002), (41, 514148), (68, 310001), (82, 257074), (164, 128537), (697, 30244), (1394, 15122), (2788, 7561)]