21680964

素因数分解:

$2^2\times 3^2\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{397}}^1$

素因数の和:485

約数の個数: 72

約数和(自身を含む): 57803928

約数和(自身を除く): 36122964

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 37, 41, 74, 82, 111, 123, 148, 164, 222, 246, 333, 369, 397, 444, 492, 666, 738, 794, 1191, 1332, 1476, 1517, 1588, 2382, 3034, 3573, 4551, 4764, 6068, 7146, 9102, 13653, 14292, 14689, 16277, 18204, 27306, 29378, 32554, 44067, 48831, 54612, 58756, 65108, 88134, 97662, 132201, 146493, 176268, 195324, 264402, 292986, 528804, 585972, 602249, 1204498, 1806747, 2408996, 3613494, 5420241, 7226988, 10840482, 21680964]

約数ペア:

[(1, 21680964), (2, 10840482), (3, 7226988), (4, 5420241), (6, 3613494), (9, 2408996), (12, 1806747), (18, 1204498), (36, 602249), (37, 585972), (41, 528804), (74, 292986), (82, 264402), (111, 195324), (123, 176268), (148, 146493), (164, 132201), (222, 97662), (246, 88134), (333, 65108), (369, 58756), (397, 54612), (444, 48831), (492, 44067), (666, 32554), (738, 29378), (794, 27306), (1191, 18204), (1332, 16277), (1476, 14689), (1517, 14292), (1588, 13653), (2382, 9102), (3034, 7146), (3573, 6068), (4551, 4764)]