20865536

素因数分解:

$2^9\times {\mathrm{83}}^1\times {\mathrm{491}}^1$

素因数の和:592

約数の個数: 40

約数和(自身を含む): 42278544

約数和(自身を除く): 21413008

約数列:

[1, 2, 4, 8, 16, 32, 64, 83, 128, 166, 256, 332, 491, 512, 664, 982, 1328, 1964, 2656, 3928, 5312, 7856, 10624, 15712, 21248, 31424, 40753, 42496, 62848, 81506, 125696, 163012, 251392, 326024, 652048, 1304096, 2608192, 5216384, 10432768, 20865536]

約数ペア:

[(1, 20865536), (2, 10432768), (4, 5216384), (8, 2608192), (16, 1304096), (32, 652048), (64, 326024), (83, 251392), (128, 163012), (166, 125696), (256, 81506), (332, 62848), (491, 42496), (512, 40753), (664, 31424), (982, 21248), (1328, 15712), (1964, 10624), (2656, 7856), (3928, 5312)]