81321920

素因数分解:

$2^6\times 5^1\times {\mathrm{67}}^1\times {\mathrm{3793}}^1$

素因数の和:3877

約数の個数: 56

約数和(自身を含む): 196589904

約数和(自身を除く): 115267984

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 67, 80, 134, 160, 268, 320, 335, 536, 670, 1072, 1340, 2144, 2680, 3793, 4288, 5360, 7586, 10720, 15172, 18965, 21440, 30344, 37930, 60688, 75860, 121376, 151720, 242752, 254131, 303440, 508262, 606880, 1016524, 1213760, 1270655, 2033048, 2541310, 4066096, 5082620, 8132192, 10165240, 16264384, 20330480, 40660960, 81321920]

約数ペア:

[(1, 81321920), (2, 40660960), (4, 20330480), (5, 16264384), (8, 10165240), (10, 8132192), (16, 5082620), (20, 4066096), (32, 2541310), (40, 2033048), (64, 1270655), (67, 1213760), (80, 1016524), (134, 606880), (160, 508262), (268, 303440), (320, 254131), (335, 242752), (536, 151720), (670, 121376), (1072, 75860), (1340, 60688), (2144, 37930), (2680, 30344), (3793, 21440), (4288, 18965), (5360, 15172), (7586, 10720)]