21237912

素因数分解:

$2^3\times 3^2\times {\mathrm{397}}^1\times {\mathrm{743}}^1$

素因数の和:1152

約数の個数: 48

約数和(自身を含む): 57741840

約数和(自身を除く): 36503928

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 397, 743, 794, 1191, 1486, 1588, 2229, 2382, 2972, 3176, 3573, 4458, 4764, 5944, 6687, 7146, 8916, 9528, 13374, 14292, 17832, 26748, 28584, 53496, 294971, 589942, 884913, 1179884, 1769826, 2359768, 2654739, 3539652, 5309478, 7079304, 10618956, 21237912]

約数ペア:

[(1, 21237912), (2, 10618956), (3, 7079304), (4, 5309478), (6, 3539652), (8, 2654739), (9, 2359768), (12, 1769826), (18, 1179884), (24, 884913), (36, 589942), (72, 294971), (397, 53496), (743, 28584), (794, 26748), (1191, 17832), (1486, 14292), (1588, 13374), (2229, 9528), (2382, 8916), (2972, 7146), (3176, 6687), (3573, 5944), (4458, 4764)]