21674704

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{491}}^1$

素因数の和:619

約数の個数: 40

約数和(自身を含む): 43925760

約数和(自身を除く): 22251056

約数列:

[1, 2, 4, 8, 16, 31, 62, 89, 124, 178, 248, 356, 491, 496, 712, 982, 1424, 1964, 2759, 3928, 5518, 7856, 11036, 15221, 22072, 30442, 43699, 44144, 60884, 87398, 121768, 174796, 243536, 349592, 699184, 1354669, 2709338, 5418676, 10837352, 21674704]

約数ペア:

[(1, 21674704), (2, 10837352), (4, 5418676), (8, 2709338), (16, 1354669), (31, 699184), (62, 349592), (89, 243536), (124, 174796), (178, 121768), (248, 87398), (356, 60884), (491, 44144), (496, 43699), (712, 30442), (982, 22072), (1424, 15221), (1964, 11036), (2759, 7856), (3928, 5518)]