21319168

素因数分解:

$2^9\times {\mathrm{13}}^1\times {\mathrm{3203}}^1$

素因数の和:3234

約数の個数: 40

約数和(自身を含む): 45887688

約数和(自身を除く): 24568520

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 104, 128, 208, 256, 416, 512, 832, 1664, 3203, 3328, 6406, 6656, 12812, 25624, 41639, 51248, 83278, 102496, 166556, 204992, 333112, 409984, 666224, 819968, 1332448, 1639936, 2664896, 5329792, 10659584, 21319168]

約数ペア:

[(1, 21319168), (2, 10659584), (4, 5329792), (8, 2664896), (13, 1639936), (16, 1332448), (26, 819968), (32, 666224), (52, 409984), (64, 333112), (104, 204992), (128, 166556), (208, 102496), (256, 83278), (416, 51248), (512, 41639), (832, 25624), (1664, 12812), (3203, 6656), (3328, 6406)]