19928456

素因数分解:

$2^3\times {\mathrm{61}}^1\times {\mathrm{97}}^1\times {\mathrm{421}}^1$

素因数の和:585

約数の個数: 32

約数和(自身を含む): 38461080

約数和(自身を除く): 18532624

約数列:

[1, 2, 4, 8, 61, 97, 122, 194, 244, 388, 421, 488, 776, 842, 1684, 3368, 5917, 11834, 23668, 25681, 40837, 47336, 51362, 81674, 102724, 163348, 205448, 326696, 2491057, 4982114, 9964228, 19928456]

約数ペア:

[(1, 19928456), (2, 9964228), (4, 4982114), (8, 2491057), (61, 326696), (97, 205448), (122, 163348), (194, 102724), (244, 81674), (388, 51362), (421, 47336), (488, 40837), (776, 25681), (842, 23668), (1684, 11834), (3368, 5917)]