20123394039

素因数分解:

$3^2\times 7^2\times {\mathrm{89}}^1\times {\mathrm{512711}}^1$

素因数の和:512820

約数の個数: 36

約数和(自身を含む): 34192763280

約数和(自身を除く): 14069369241

約数列:

[1, 3, 7, 9, 21, 49, 63, 89, 147, 267, 441, 623, 801, 1869, 4361, 5607, 13083, 39249, 512711, 1538133, 3588977, 4614399, 10766931, 25122839, 32300793, 45631279, 75368517, 136893837, 226105551, 319418953, 410681511, 958256859, 2235932671, 2874770577, 6707798013, 20123394039]

約数ペア:

[(1, 20123394039), (3, 6707798013), (7, 2874770577), (9, 2235932671), (21, 958256859), (49, 410681511), (63, 319418953), (89, 226105551), (147, 136893837), (267, 75368517), (441, 45631279), (623, 32300793), (801, 25122839), (1869, 10766931), (4361, 4614399), (5607, 3588977), (13083, 1538133), (39249, 512711)]