21821896

素因数分解:

$2^3\times {\mathrm{61}}^1\times {\mathrm{97}}^1\times {\mathrm{461}}^1$

素因数の和:625

約数の個数: 32

約数和(自身を含む): 42106680

約数和(自身を除く): 20284784

約数列:

[1, 2, 4, 8, 61, 97, 122, 194, 244, 388, 461, 488, 776, 922, 1844, 3688, 5917, 11834, 23668, 28121, 44717, 47336, 56242, 89434, 112484, 178868, 224968, 357736, 2727737, 5455474, 10910948, 21821896]

約数ペア:

[(1, 21821896), (2, 10910948), (4, 5455474), (8, 2727737), (61, 357736), (97, 224968), (122, 178868), (194, 112484), (244, 89434), (388, 56242), (461, 47336), (488, 44717), (776, 28121), (922, 23668), (1844, 11834), (3688, 5917)]