18963568

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{173}}^1$

素因数の和:242

約数の個数: 80

約数和(自身を含む): 43497216

約数和(自身を除く): 24533648

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 31, 34, 52, 62, 68, 104, 124, 136, 173, 208, 221, 248, 272, 346, 403, 442, 496, 527, 692, 806, 884, 1054, 1384, 1612, 1768, 2108, 2249, 2768, 2941, 3224, 3536, 4216, 4498, 5363, 5882, 6448, 6851, 8432, 8996, 10726, 11764, 13702, 17992, 21452, 23528, 27404, 35984, 38233, 42904, 47056, 54808, 69719, 76466, 85808, 91171, 109616, 139438, 152932, 182342, 278876, 305864, 364684, 557752, 611728, 729368, 1115504, 1185223, 1458736, 2370446, 4740892, 9481784, 18963568]

約数ペア:

[(1, 18963568), (2, 9481784), (4, 4740892), (8, 2370446), (13, 1458736), (16, 1185223), (17, 1115504), (26, 729368), (31, 611728), (34, 557752), (52, 364684), (62, 305864), (68, 278876), (104, 182342), (124, 152932), (136, 139438), (173, 109616), (208, 91171), (221, 85808), (248, 76466), (272, 69719), (346, 54808), (403, 47056), (442, 42904), (496, 38233), (527, 35984), (692, 27404), (806, 23528), (884, 21452), (1054, 17992), (1384, 13702), (1612, 11764), (1768, 10726), (2108, 8996), (2249, 8432), (2768, 6851), (2941, 6448), (3224, 5882), (3536, 5363), (4216, 4498)]