20420790

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{52361}}^1$

素因数の和:52384

約数の個数: 32

約数和(自身を含む): 52780896

約数和(自身を除く): 32360106

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 52361, 104722, 157083, 261805, 314166, 523610, 680693, 785415, 1361386, 1570830, 2042079, 3403465, 4084158, 6806930, 10210395, 20420790]

約数ペア:

[(1, 20420790), (2, 10210395), (3, 6806930), (5, 4084158), (6, 3403465), (10, 2042079), (13, 1570830), (15, 1361386), (26, 785415), (30, 680693), (39, 523610), (65, 314166), (78, 261805), (130, 157083), (195, 104722), (390, 52361)]