28503020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{15661}}^1$

素因数の和:15690

約数の個数: 48

約数和(自身を含む): 73674048

約数和(自身を除く): 45171028

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 15661, 31322, 62644, 78305, 109627, 156610, 203593, 219254, 313220, 407186, 438508, 548135, 814372, 1017965, 1096270, 1425151, 2035930, 2192540, 2850302, 4071860, 5700604, 7125755, 14251510, 28503020]

約数ペア:

[(1, 28503020), (2, 14251510), (4, 7125755), (5, 5700604), (7, 4071860), (10, 2850302), (13, 2192540), (14, 2035930), (20, 1425151), (26, 1096270), (28, 1017965), (35, 814372), (52, 548135), (65, 438508), (70, 407186), (91, 313220), (130, 219254), (140, 203593), (182, 156610), (260, 109627), (364, 78305), (455, 62644), (910, 31322), (1820, 15661)]