21827780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{2269}}^1$

素因数の和:2328

約数の個数: 48

約数和(自身を含む): 50720880

約数和(自身を除く): 28893100

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 37, 52, 65, 74, 130, 148, 185, 260, 370, 481, 740, 962, 1924, 2269, 2405, 4538, 4810, 9076, 9620, 11345, 22690, 29497, 45380, 58994, 83953, 117988, 147485, 167906, 294970, 335812, 419765, 589940, 839530, 1091389, 1679060, 2182778, 4365556, 5456945, 10913890, 21827780]

約数ペア:

[(1, 21827780), (2, 10913890), (4, 5456945), (5, 4365556), (10, 2182778), (13, 1679060), (20, 1091389), (26, 839530), (37, 589940), (52, 419765), (65, 335812), (74, 294970), (130, 167906), (148, 147485), (185, 117988), (260, 83953), (370, 58994), (481, 45380), (740, 29497), (962, 22690), (1924, 11345), (2269, 9620), (2405, 9076), (4538, 4810)]