1256220

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{997}}^1$

素因数の和:1019

約数の個数: 72

約数和(自身を含む): 4359264

約数和(自身を除く): 3103044

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 997, 1260, 1994, 2991, 3988, 4985, 5982, 6979, 8973, 9970, 11964, 13958, 14955, 17946, 19940, 20937, 27916, 29910, 34895, 35892, 41874, 44865, 59820, 62811, 69790, 83748, 89730, 104685, 125622, 139580, 179460, 209370, 251244, 314055, 418740, 628110, 1256220]

約数ペア:

[(1, 1256220), (2, 628110), (3, 418740), (4, 314055), (5, 251244), (6, 209370), (7, 179460), (9, 139580), (10, 125622), (12, 104685), (14, 89730), (15, 83748), (18, 69790), (20, 62811), (21, 59820), (28, 44865), (30, 41874), (35, 35892), (36, 34895), (42, 29910), (45, 27916), (60, 20937), (63, 19940), (70, 17946), (84, 14955), (90, 13958), (105, 11964), (126, 9970), (140, 8973), (180, 6979), (210, 5982), (252, 4985), (315, 3988), (420, 2991), (630, 1994), (997, 1260)]