21072112

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{77471}}^1$

素因数の和:77496

約数の個数: 20

約数和(自身を含む): 43229376

約数和(自身を除く): 22157264

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 77471, 154942, 309884, 619768, 1239536, 1317007, 2634014, 5268028, 10536056, 21072112]

約数ペア:

[(1, 21072112), (2, 10536056), (4, 5268028), (8, 2634014), (16, 1317007), (17, 1239536), (34, 619768), (68, 309884), (136, 154942), (272, 77471)]