18421936

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{2857}}^1$

素因数の和:2909

約数の個数: 40

約数和(自身を含む): 39691904

約数和(自身を除く): 21269968

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 52, 62, 104, 124, 208, 248, 403, 496, 806, 1612, 2857, 3224, 5714, 6448, 11428, 22856, 37141, 45712, 74282, 88567, 148564, 177134, 297128, 354268, 594256, 708536, 1151371, 1417072, 2302742, 4605484, 9210968, 18421936]

約数ペア:

[(1, 18421936), (2, 9210968), (4, 4605484), (8, 2302742), (13, 1417072), (16, 1151371), (26, 708536), (31, 594256), (52, 354268), (62, 297128), (104, 177134), (124, 148564), (208, 88567), (248, 74282), (403, 45712), (496, 37141), (806, 22856), (1612, 11428), (2857, 6448), (3224, 5714)]