21078028

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{13477}}^1$

素因数の和:13521

約数の個数: 24

約数和(自身を含む): 40757472

約数和(自身を除く): 19679444

約数列:

[1, 2, 4, 17, 23, 34, 46, 68, 92, 391, 782, 1564, 13477, 26954, 53908, 229109, 309971, 458218, 619942, 916436, 1239884, 5269507, 10539014, 21078028]

約数ペア:

[(1, 21078028), (2, 10539014), (4, 5269507), (17, 1239884), (23, 916436), (34, 619942), (46, 458218), (68, 309971), (92, 229109), (391, 53908), (782, 26954), (1564, 13477)]