19771648

素因数分解:

$2^8\times {\mathrm{13}}^2\times {\mathrm{457}}^1$

素因数の和:499

約数の個数: 54

約数和(自身を含む): 42828954

約数和(自身を除く): 23057306

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 104, 128, 169, 208, 256, 338, 416, 457, 676, 832, 914, 1352, 1664, 1828, 2704, 3328, 3656, 5408, 5941, 7312, 10816, 11882, 14624, 21632, 23764, 29248, 43264, 47528, 58496, 77233, 95056, 116992, 154466, 190112, 308932, 380224, 617864, 760448, 1235728, 1520896, 2471456, 4942912, 9885824, 19771648]

約数ペア:

[(1, 19771648), (2, 9885824), (4, 4942912), (8, 2471456), (13, 1520896), (16, 1235728), (26, 760448), (32, 617864), (52, 380224), (64, 308932), (104, 190112), (128, 154466), (169, 116992), (208, 95056), (256, 77233), (338, 58496), (416, 47528), (457, 43264), (676, 29248), (832, 23764), (914, 21632), (1352, 14624), (1664, 11882), (1828, 10816), (2704, 7312), (3328, 5941), (3656, 5408)]