20213488

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{491}}^1$

素因数の和:613

約数の個数: 40

約数和(自身を含む): 40997376

約数和(自身を除く): 20783888

約数列:

[1, 2, 4, 8, 16, 31, 62, 83, 124, 166, 248, 332, 491, 496, 664, 982, 1328, 1964, 2573, 3928, 5146, 7856, 10292, 15221, 20584, 30442, 40753, 41168, 60884, 81506, 121768, 163012, 243536, 326024, 652048, 1263343, 2526686, 5053372, 10106744, 20213488]

約数ペア:

[(1, 20213488), (2, 10106744), (4, 5053372), (8, 2526686), (16, 1263343), (31, 652048), (62, 326024), (83, 243536), (124, 163012), (166, 121768), (248, 81506), (332, 60884), (491, 41168), (496, 40753), (664, 30442), (982, 20584), (1328, 15221), (1964, 10292), (2573, 7856), (3928, 5146)]