21542872

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{359}}^1\times {\mathrm{577}}^1$

素因数の和:955

約数の個数: 32

約数和(自身を含む): 43696800

約数和(自身を除く): 22153928

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 359, 577, 718, 1154, 1436, 2308, 2872, 4616, 4667, 7501, 9334, 15002, 18668, 30004, 37336, 60008, 207143, 414286, 828572, 1657144, 2692859, 5385718, 10771436, 21542872]

約数ペア:

[(1, 21542872), (2, 10771436), (4, 5385718), (8, 2692859), (13, 1657144), (26, 828572), (52, 414286), (104, 207143), (359, 60008), (577, 37336), (718, 30004), (1154, 18668), (1436, 15002), (2308, 9334), (2872, 7501), (4616, 4667)]