21186536

素因数分解:

$2^3\times 7^1\times {\mathrm{79}}^1\times {\mathrm{4789}}^1$

素因数の和:4881

約数の個数: 32

約数和(自身を含む): 45984000

約数和(自身を除く): 24797464

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 79, 158, 316, 553, 632, 1106, 2212, 4424, 4789, 9578, 19156, 33523, 38312, 67046, 134092, 268184, 378331, 756662, 1513324, 2648317, 3026648, 5296634, 10593268, 21186536]

約数ペア:

[(1, 21186536), (2, 10593268), (4, 5296634), (7, 3026648), (8, 2648317), (14, 1513324), (28, 756662), (56, 378331), (79, 268184), (158, 134092), (316, 67046), (553, 38312), (632, 33523), (1106, 19156), (2212, 9578), (4424, 4789)]