21105816

素因数分解:

$2^3\times 3^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{241}}^1$

素因数の和:380

約数の個数: 64

約数和(自身を含む): 54885600

約数和(自身を除く): 33779784

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 41, 82, 89, 123, 164, 178, 241, 246, 267, 328, 356, 482, 492, 534, 712, 723, 964, 984, 1068, 1446, 1928, 2136, 2892, 3649, 5784, 7298, 9881, 10947, 14596, 19762, 21449, 21894, 29192, 29643, 39524, 42898, 43788, 59286, 64347, 79048, 85796, 87576, 118572, 128694, 171592, 237144, 257388, 514776, 879409, 1758818, 2638227, 3517636, 5276454, 7035272, 10552908, 21105816]

約数ペア:

[(1, 21105816), (2, 10552908), (3, 7035272), (4, 5276454), (6, 3517636), (8, 2638227), (12, 1758818), (24, 879409), (41, 514776), (82, 257388), (89, 237144), (123, 171592), (164, 128694), (178, 118572), (241, 87576), (246, 85796), (267, 79048), (328, 64347), (356, 59286), (482, 43788), (492, 42898), (534, 39524), (712, 29643), (723, 29192), (964, 21894), (984, 21449), (1068, 19762), (1446, 14596), (1928, 10947), (2136, 9881), (2892, 7298), (3649, 5784)]