20519385

素因数分解:

$3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{1097}}^1$

素因数の和:1177

約数の個数: 32

約数和(自身を含む): 34784640

約数和(自身を除く): 14265255

約数列:

[1, 3, 5, 15, 29, 43, 87, 129, 145, 215, 435, 645, 1097, 1247, 3291, 3741, 5485, 6235, 16455, 18705, 31813, 47171, 95439, 141513, 159065, 235855, 477195, 707565, 1367959, 4103877, 6839795, 20519385]

約数ペア:

[(1, 20519385), (3, 6839795), (5, 4103877), (15, 1367959), (29, 707565), (43, 477195), (87, 235855), (129, 159065), (145, 141513), (215, 95439), (435, 47171), (645, 31813), (1097, 18705), (1247, 16455), (3291, 6235), (3741, 5485)]