21440988

素因数分解:

$2^2\times 3^2\times {\mathrm{491}}^1\times {\mathrm{1213}}^1$

素因数の和:1714

約数の個数: 36

約数和(自身を含む): 54353208

約数和(自身を除く): 32912220

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 491, 982, 1213, 1473, 1964, 2426, 2946, 3639, 4419, 4852, 5892, 7278, 8838, 10917, 14556, 17676, 21834, 43668, 595583, 1191166, 1786749, 2382332, 3573498, 5360247, 7146996, 10720494, 21440988]

約数ペア:

[(1, 21440988), (2, 10720494), (3, 7146996), (4, 5360247), (6, 3573498), (9, 2382332), (12, 1786749), (18, 1191166), (36, 595583), (491, 43668), (982, 21834), (1213, 17676), (1473, 14556), (1964, 10917), (2426, 8838), (2946, 7278), (3639, 5892), (4419, 4852)]