18981736

素因数分解:

$2^3\times {\mathrm{61}}^1\times {\mathrm{97}}^1\times {\mathrm{401}}^1$

素因数の和:565

約数の個数: 32

約数和(自身を含む): 36638280

約数和(自身を除く): 17656544

約数列:

[1, 2, 4, 8, 61, 97, 122, 194, 244, 388, 401, 488, 776, 802, 1604, 3208, 5917, 11834, 23668, 24461, 38897, 47336, 48922, 77794, 97844, 155588, 195688, 311176, 2372717, 4745434, 9490868, 18981736]

約数ペア:

[(1, 18981736), (2, 9490868), (4, 4745434), (8, 2372717), (61, 311176), (97, 195688), (122, 155588), (194, 97844), (244, 77794), (388, 48922), (401, 47336), (488, 38897), (776, 24461), (802, 23668), (1604, 11834), (3208, 5917)]