21390616

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{2311}}^1$

素因数の和:2419

約数の個数: 32

約数和(自身を含む): 43696800

約数和(自身を除く): 22306184

約数列:

[1, 2, 4, 8, 13, 26, 52, 89, 104, 178, 356, 712, 1157, 2311, 2314, 4622, 4628, 9244, 9256, 18488, 30043, 60086, 120172, 205679, 240344, 411358, 822716, 1645432, 2673827, 5347654, 10695308, 21390616]

約数ペア:

[(1, 21390616), (2, 10695308), (4, 5347654), (8, 2673827), (13, 1645432), (26, 822716), (52, 411358), (89, 240344), (104, 205679), (178, 120172), (356, 60086), (712, 30043), (1157, 18488), (2311, 9256), (2314, 9244), (4622, 4628)]