21729105968

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{79886419}}^1$

素因数の和:79886444

約数の個数: 20

約数和(自身を含む): 44576622360

約数和(自身を除く): 22847516392

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 79886419, 159772838, 319545676, 639091352, 1278182704, 1358069123, 2716138246, 5432276492, 10864552984, 21729105968]

約数ペア:

[(1, 21729105968), (2, 10864552984), (4, 5432276492), (8, 2716138246), (16, 1358069123), (17, 1278182704), (34, 639091352), (68, 319545676), (136, 159772838), (272, 79886419)]